Eterna KonTiki 1957-58 Cal. 1414U A-Stamp Registry

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Hi everyone,I am seeking database insights, community tracking information, and historical literature scans on an exceptionally early, expertly curated 1957–1958 Eterna-Matic KonTiki First Execution package.

Given its combined technical parameters, this piece appears to represent a true "Pre-Release" transitional field variant assembled right at the absolute genesis of the model line.The heart of the watch is a late-1957 production engine (Movement Serial: 4,192,322) housing the base Caliber 1414U layout rather than the later standardized 1414UD sports caliber. Crucially, the inner caseback is entirely free of the 130T reference engraving, carrying only the solitary, pre-catalog case-maker "A" (Acier) stamp, paired with a beautiful, crisp flat-engraved exterior steel raft caseback.

The glossy black Radium-226 dial has aged into a stunning, uniform "Stardust" patina and retains its highly elusive, early luminous diamond-tipped lozenge seconds hand—matching Eterna's earliest 1958 promotional trade sketches before full-scale production models were simplified to plain needle sweep hands. The original crystal remains intact, displaying the iconic micro-etched central 5-dot logo hovering directly over the hand pinion, controlled by the correct, original recessed five-dot signature crown.To complete this museum-grade reference, I have spent months sourcing a period-perfect, ultra-rare undated Breveté Gay Frères steel brick bracelet carrying the model-specific "KH" end-link stamps contoured precisely for this early step-case.

The packaging includes a 1950s Eterna teal-cyan/red velvet presentation box carrying a vintage Belgian estate address fountain pen inscription on the base ("M. Ghyselen - De Pinte / Manitoba Laan"), alongside a blank, new-old-stock Swiss-printed Spanish export warranty certificate (Boletín de Garantía with print control code 6000-4/4).Mechanically, the gear train is performing phenomenally, field-testing on the wrist at near-zero daily deviation across 3 days, yielding an active multi-day power reserve.

My Questions for the Community:The 1414U Registry Check: Does anyone else in the community have a verified KonTiki logged in their registry from the late-1957 4.19M block? If so, does yours also utilize the base 1414U caliber layout or feature a different handset variation?

The "A-Stamp" Survival Ratio: For the Eterna reference scholars, do we have an estimated survival ratio or known range for these pre-catalog 'A-stamp' inner lids versus the standardized 130T stamped pieces that followed in late 1958?

The Lozenge Hand Cut-Off: Is there an established serial number cut-off point in early 1958 when Eterna officially discontinued the diamond-tipped lozenge seconds hand in favor of plain needle sweep hands?

Paperwork Archive Identification: Does anyone have access to old European export logs that track the printing control number 6000-4/4 found on the bottom corner of this Swiss-printed Spanish warranty paper?

Gay Frères Clasp Chronology: For the Gay Frères specialists, is there a consensus on the exact year block when GF transitioned away from the lone "Breveté" clasp stamping over to the quarter/year dated stampings?

Archival Literature & Launch Run Proof: Does anyone in the community possess digital scans of 1957 or early 1958 Swiss dealer catalogs, international distributor launch sheets, or internal factory literature?

I am eager to see if there is any written record tracking how Eterna designated these late-1957 4.19M movement batches, or if there is documented evidence of this unstandardized 'A-stamp' case configuration being designated as an internal test, experimental batch, or promotional pre-production field run prior to the official 130T commercial launch.Any insights, database comparisons, or archival information would be incredibly appreciated!

 
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Do you have normal hands on yours. I also have not found an earlier mvmt number in a kontiki
 
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I'm afraid my watch was trashed. So I restored it the best I could within a acceptabele budget. But as you can see a lot of original details are gone... The before and after pictures... : )

 
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I'm afraid my watch was trashed. So I restored it the best I could within a acceptabele budget. But as you can see a lot of original details are gone... The before and after pictures... : )

O wow that was trashed. Refurbished looks great! I got super lucky someone took really good care of this one its all original
 
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No. It was sold through eBay, and I simply saved the images to my hard drive years ago. But if care to do some serious detective work, perhaps this will help...😀

 
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No. It was sold through eBay, and I simply saved the images to my hard drive years ago. But if care to do some serious detective work, perhaps this will help...😀

Yah that was 10 years ago. I cant find that user now. I definitely would like to ask questions!
 
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Your hands are unfortunately wrong, this belong on the eterna super Kontiki.
 
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The caliber is correct this is the no date movement. And the back case is correct without the golden medallion these came on the later kontiki watches
 
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Endlinks on the early models should be KG,KH endlinks are for the kontiki 20
 
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Your hands are unfortunately wrong, this belong on the eterna super Kontiki.
They are dated to 1957. Before the super kontiki and they are original. I have confirmation that this is a one of one pre-production
 
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Not sure if this helps but here's mine.
Came complete & uncleaned from the estate auction of the original owner.
He wasn't a collector.
The small-town auction house didn't know it was anything & didn't care.
It was in a box lot with the other watches he'd worn throughout his life.
Just another old watch.
Bracelet stamped 4 58.
I cleaned it up & changed nothing except the spring bars.

 
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A bit late to this party…
I have the watch which was pictured by Tony C and further documented with the eBay sale. I purchased the watch from another collector here at OF back a number of years ago now, but we concluded our deal sometime after the eBay auction sale. I'm not sure if he bought the watch at that auction- it may have passed through others hands before he got it.

I can confirm my example has the 1414U movement, with serial number 4,191,000. The caseback exterior has the etched raft logo, but I don’t have an inside caseback photo handy to confirm the presence of the single letter A. However I believe it does, since I do not recall seeing a longer model number stamped inside. I believe I would have made note of that longer multiple letter/number sequence had it been stamped inside the caseback. In any case, the watch is an absolute favorite of mine. Two images under different lighting:

Having seen the OP’s watch, I noticed the handset, and how the hands appear to be the same shape as the later Super KonTiki hands. I can only speculate as to where these hands may have been first used- on the 1958, or subsequent Super KonTiki release in the very early 1960’s?

Back when I was researching my watch, I found some interesting documents when trawling through the web. I cannot recall the source, or vouch for the accuracy of any of these images or the dates attributed above them. It appears to be the work of another collector. However this thread seems as good a place as any to show them.
 
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A bit late to this party…
I have the watch which was pictured by Tony C and further documented with the eBay sale. I purchased the watch from another collector here at OF back a number of years ago now, but we concluded our deal sometime after the eBay auction sale. I'm not sure if he bought the watch at that auction- it may have passed through others hands before he got it.

I can confirm my example has the 1414U movement, with serial number 4,191,000. The caseback exterior has the etched raft logo, but I don’t have an inside caseback photo handy to confirm the presence of the single letter A. However I believe it does, since I do not recall seeing a longer model number stamped inside. I believe I would have made note of that longer multiple letter/number sequence had it been stamped inside the caseback. In any case, the watch is an absolute favorite of mine. Two images under different lighting:

Having seen the OP’s watch, I noticed the handset, and how the hands appear to be the same shape as the later Super KonTiki hands. I can only speculate as to where these hands may have been first used- on the 1958, or subsequent Super KonTiki release in the very early 1960’s?

Back when I was researching my watch, I found some interesting documents when trawling through the web. I cannot recall the source, or vouch for the accuracy of any of these images or the dates attributed above them. It appears to be the work of another collector. However this thread seems as good a place as any to show them.
A beautiful watch, thanks for posting - I cry dibs, but of course in hope rather than expectation!
The other images you show are from The Blomman Report of December 2019, which I hope he wouldn't mind me linking here.
 
Posts
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A bit late to this party…
I have the watch which was pictured by Tony C and further documented with the eBay sale. I purchased the watch from another collector here at OF back a number of years ago now, but we concluded our deal sometime after the eBay auction sale. I'm not sure if he bought the watch at that auction- it may have passed through others hands before he got it.

I can confirm my example has the 1414U movement, with serial number 4,191,000. The caseback exterior has the etched raft logo, but I don’t have an inside caseback photo handy to confirm the presence of the single letter A. However I believe it does, since I do not recall seeing a longer model number stamped inside. I believe I would have made note of that longer multiple letter/number sequence had it been stamped inside the caseback. In any case, the watch is an absolute favorite of mine. Two images under different lighting:

Having seen the OP’s watch, I noticed the handset, and how the hands appear to be the same shape as the later Super KonTiki hands. I can only speculate as to where these hands may have been first used- on the 1958, or subsequent Super KonTiki release in the very early 1960’s?

Back when I was researching my watch, I found some interesting documents when trawling through the web. I cannot recall the source, or vouch for the accuracy of any of these images or the dates attributed above them. It appears to be the work of another collector. However this thread seems as good a place as any to show them.
A beautiful watch, thanks for posting - I cry dibs, but of course in hope rather than expectation!
The other images you show are from The Blomman Report of December 2019, which I hope he wouldn't mind me linking here.
First off I want to thank you both so much for responding. Its super cool. I have done so much research on this watch and flatfoot our watches are the earliest kontikis that I've been Able to find and seeing the different hand set for the years I am convinced that the hands on mine are a variation of experimental handset as it is super close to the Mercedes hand set. I understand that this is the same style as the super kontiki but after looking at the hands under a microscope and examining the hands on the super kontiki mine are consistent with 1950s style hands before the super kontiki was produced. As my movement dates to 1957 as well as yours flatfoot. I do genuinely believe that mine is a 1 of 1. I just need to find someone who can access the archives of Eterna-Matic and see if I can get it confirmed. If anyone has a contact I could get in touch with