Happened upon this and don't know anything about it.

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If anybody can give me insight I would appreciate it very much. I was in a jam last year and I melted down a piece that I regret with all my soul.
 
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I dunno, feels pretty real. It was purchased new once upon a long time ago.
 
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It's a snap back, open it up and much will be revealed. Like it or not the value is the gold content, it's not a collectible piece.
 
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The non-signed crown plus what appears to be the allegedly 14k gold wearing thru to brass on the back of the case makes me have some doubt as to its authenticity, as does the 14k printing, that isn't consistent with the ones I've seen, though I have only minor experience with these sorts of watches.

As @Evitzee says, the tell of the tape would be to see the movement and inside of the caseback on it.

Even if real, value is going to be entirely melt value. You might get ~$75 for the movement from someone desperate for parts, but the case value is all there is. There is ~4g of gold in a case of that size, though if the bracelet is gold too, thats where the value would be. The diamonds are small enough to likely have little value.
 
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The non-signed crown plus what appears to be the allegedly 14k gold wearing thru to brass on the back of the case makes me have some doubt as to its authenticity, as does the 14k printing, that isn't consistent with the ones I've seen, though I have only minor experience with these sorts of watches.

As @Evitzee says, the tell of the tape would be to see the movement and inside of the caseback on it.

Even if real, value is going to be entirely melt value. You might get ~$75 for the movement from someone desperate for parts, but the case value is all there is. There is ~4g of gold in a case of that size, though if the bracelet is gold too, thats where the value would be. The diamonds are small enough to likely have little value.
Ok melt it is. A shame though. It's real pretty.
: (
 
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16.9 total weight
15.1 gold @ 14k


A real shame though.
 
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16.9 total weight
15.1 gold @ 14k


A real shame though.
Looks like at best you could get ~$1200 for it, and most places only offer 80%, so 80% of that. The crystal is ~3/4g or so, and you probably have the rest of a gram in stones that don't really have value (EDIT: not quite! That listing I posted above says it is 0.16 carats, which would be 0.032g). That said, they give weight as 14.4g, but that could be a bracelet size difference, or they are properly removing the crystal.

You'll probably have no luck selling that 'as a watch' thanks to the movement (though even WITH the right movement, it didn't really have much value).
 
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I have one almost like this Same case number which I think is a Ross American case.

The movement should be a 650. I have an early thread on it here somewhere. These movements are about as cheap as an Omega movement one will find (well 620 and 480 movements are more abundant.) 640/650 movements are really tricky to work on. I wound up (incorrectly) using rodico to hold the wheels so I could get the plates together. Then broke a bunch of incabloc springs.

I did get a large collection of Women's watch parts to see if I can eventually get better timegrapher results. These though are a real PITA to work with and I have plenty of 55x, 33x and 134x movements to play with first.



I have no intention of ever melting mine though. I used to wear it to the SF opera when I had a box seat. It also visited the Omega factory when I did as one of the 10 omega watches (5 on each wrist.) I still remember on one of the bus rides where one of the other makers looking at the stones remarked 'Holy sh*t those stones are real.' (while small they are of good quality.)
 
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I have one almost like this Same case number which I think is a Ross American case.

The movement should be a 650. I have an early thread on it here somewhere. These movements are about as cheap as an Omega movement one will find (well 620 and 480 movements are more abundant.) 640/650 movements are really tricky to work on. I wound up (incorrectly) using rodico to hold the wheels so I could get the plates together. Then broke a bunch of incabloc springs.

I did get a large collection of Women's watch parts to see if I can eventually get better timegrapher results. These though are a real PITA to work with and I have plenty of 55x, 33x and 134x movements to play with first.



I have no intention of ever melting mine though. I used to wear it to the SF opera when I had a box seat. It also visited the Omega factory when I did as one of the 10 omega watches (5 on each wrist.) I still remember on one of the bus rides where one of the other makers looking at the stones remarked 'Holy sh*t those stones are real.' (while small they are of good quality.)
Curious how different the 640/650 is from a 67x/68x are? I've got a few under my belt now, and find them pretty nice to assemble, just a little more challenging because of the size. I DID find the incabloc springs tended to escape and break easily, I ended up losing a ton of them to the watch cleaning machine 😁
 
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620 base like the 67x and 68x are a lot larger at like 18mm and automatics. These are all based on the 18mm plate. (I see the manual 620 is refed at 17.5mm) The 640 base caliber is 12.5mm that is like 1/2 an inch. A full scale smaller. They are also full plate movements, where the automatics have a stack of bridges and are built with the same quality as a 55x movement.

A 630 movement showed up a few weeks back. I waited too long on it and it sold yesterday. I have another ladies dynamic case I forgot about, although no hands or dial. On the other hand a 68x will fit in the case and I have a few of those... Just need dial hands and a crystal.
 
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620 base like the 67x and 68x are a lot larger at like 18mm and automatics. These are all based on the 18mm plate. (I see the manual 620 is refed at 17.5mm) The 640 base caliber is 12.5mm that is like 1/2 an inch. A full scale smaller. They are also full plate movements, where the automatics have a stack of bridges and are built with the same quality as a 55x movement.

A 630 movement showed up a few weeks back. I waited too long on it and it sold yesterday. I have another ladies dynamic case I forgot about, although no hands or dial. On the other hand a 68x will fit in the case and I have a few of those... Just need dial hands and a crystal.
Wow! Now that you mention it, the ladies dynamic I did a bit back DID have a 681 in it. That plus a pair of 684s (which are held up because gaskets are impossible to find, so I'm having to make them!) are the ones of that size I've dealt with! I thought the 680s were beautiful movements (as you said, to the quality of a 550, which was kind of amazing at that scale!), so sad/interesting to hear about the 640!
 
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so sad/interesting to hear about the 640!
Yeah most of them wound up in the 🔥❤️‍🔥🔥fiery furnace.🔥❤️‍🔥🔥

It is hard to keep track of all these ladies calibers. They were a lot of the bread and butter before the quartz crisis. What paied for the R&D. The 470/480 is not the smallest auto. The 455 is 16mm and automatic. I have some rectangular 730 movements what fell into my shoe, and I walked around for the better part of a day till I felt the lump Surprisingly the balances still twitch.

The main problem with these wonderful watches is as noted they were melted down. Most were probably gifts only worn once, which is why they were such the cash cow back in the day.

The makerspace recently got a new 3D printer that is a lot easier to use. I had some decent results using the laser to cut acrylic, but the acrylic is brittle. Did a bit with silicone RTV for mold making. Might be possible to use the laser to make a mold and cast some RTV. Gaskets are an issue why I never totally finish my projects. One of which is a shot injection molding press.
 
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Yeah most of them wound up in the 🔥❤️‍🔥🔥fiery furnace.🔥❤️‍🔥🔥

It is hard to keep track of all these ladies calibers. They were a lot of the bread and butter before the quartz crisis. What paied for the R&D. The 470/480 is not the smallest auto. The 455 is 16mm and automatic. I have some rectangular 730 movements what fell into my shoe, and I walked around for the better part of a day till I felt the lump Surprisingly the balances still twitch.

The main problem with these wonderful watches is as noted they were melted down. Most were probably gifts only worn once, which is why they were such the cash cow back in the day.

The makerspace recently got a new 3D printer that is a lot easier to use. I had some decent results using the laser to cut acrylic, but the acrylic is brittle. Did a bit with silicone RTV for mold making. Might be possible to use the laser to make a mold and cast some RTV. Gaskets are an issue why I never totally finish my projects. One of which is a shot injection molding press.
These are actually more than JUST gaskets, they are full-size things with shapes/etc.

Here's a pic of the gaskets I have. They are in reasonable shape, and I might just re-use them, but they have some gouges from a previous watchmaker trying to dig them out (I got this watch as 'used' with no idea what was IN it thanks to said seller not being able to get into it!).


I DID pick up a piece of what I think is the best match, some 95A Polyurethane round rod, but could only find it in... a large size and didn't conceptualize how big it is 😁 It should only take a little time to make each piece on the lathe, but I have to get out ot my shop, and its cold these days 😁 (Ed White for scale, note that the bracelet while open only BARELY fits! 2.5" diameter!).
 
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I continued this in a new thread in watchmaking.

There is a lot of potential here. I bounce back and forth on this stuff a lot. Although at the moment I seem to be more in a parts hording phase. There always seems to be though a single part that stops the project, until it gets revived, which can take years or decades.