Rare Omega Speedmaster Holy Grail 376.0822 Jet Black Non-Wedge Prototype Dial?

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Is there any back story on where to this dial came from? Did it come on a watch, or on its own? Was the source trusted? Well known?
 
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The only service dial I'm aware of for the Grail is the missing-10 luminova version. For the 321 models, how does one discern between a service dial and an authentic dial with a normal degree of variation?
In the example I gave? Very easy no 321 left the factory with a printed logo. Ergo if you know the line, a pre printed logo font with a printed logo is highly unusual as all other examples had the drop R or the logo that came after.
 
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Thanks for the info. However, going back to my previous point, if it was indeed a service dial, why are there no other living examples of my dial in existence? At least with the 321 variations, there are multiple examples of each form of service dial.
Then apparently you don;t know the answer to my question on why a watch would received a service dial from the factory when serviced 5 years from new in that time period. Nor how Omega stocks service dials for very limited production pieces.
 
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there is no missing 10 luminova dial. there's the mark v vintage dials (which are missing the 10 and also have the "open ended box" at 3 o'clock for the day/date), and the modern luminova dials which are exactly like the originals, but with no concentric circles on the subdials.
Precisely and concisely
 
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This redial on watchpro also seems to have re built feet to get them up to diameter of the fitting for the grail
 
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Well research ,and I am not seeing singer stamped across the back as it should be if it’s one of theirs

Not all the dials are Singer stamped, I have 2 Cal.1045 dials I not really know to which Ref. these are made. MK4.5 or something else, I have no idea. I only have seen this Speedmaster 50 with the same dial some time ago and it was called a "prototype"......

 
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I have exhibited an actual dial from a 376.0822 which Singer would be using in 1987
 
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In 1974 the Dial manufacturing was somewhat different in my humble opinion
There are quite a few I have seen with no manufacturers stamp
 
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I think @incabloc's dial is accepted as a prototype. Hard to tell from the pic, but it looks like it still has the "wedge" 2.

I'm not totally sure we learn much from that dial other than that there are plates for dials for 1045 (and/or other 5100 based movements) that don't have Singer stamped on the back side.
 
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Agreed and in early cases singers weren’t always stamped but they certainly were in 1985 onwards
So prototype and preproduction in 1986 and production 1987

The museum will be happy to verify I am sure
Alain Monachon is one of the curators and he’s much more available than Petros
Even David Julmy who is the watchmaker for the museum is a very excellent source as he’s seen so many

If our friend gives me his permission I will show it to Simon Freese who is just local to me and he will certainly be a good start as he’s tremendously experienced and supremely conservative William at Speedmaster 101 recommends no one else
Edited by a mod:
 
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Sure, you have my permission!

Agreed and in early cases singers weren’t always stamped but they certainly were in 1985 onwards
So prototype and preproduction in 1986 and production 1987

The museum will be happy to verify I am sure
Alain Monachon is one of the curators and he’s much more available than Petros
Even David Julmy who is the watchmaker for the museum is a very excellent source as he’s seen so many

If our friend gives me his permission I will show it to Simon Freese who is just local to me and he will certainly be a good start as he’s tremendously experienced and supremely conservative William at Speedmaster 101 recommends no one else
Edited by a mod:
 
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Well Simon has spoken ...it’s a redial reprint ...they hand print these by having a plate made up and ink through
It’s too lemon on the lume and too faint on the print and too fuzzy in parts and to many places where the print merges and then the house style wedge 2 has been ignored

When they made a prototype they were very careful to ensure quality so that production had a great sample to go off