80s Diver Prototype?

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hamiltonelectric
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Re: 80s Diver Prototype?

#11 Post by hamiltonelectric » Wed Feb 03, 2016 3:32 pm

It says 'automatic' on the dial. ;)

I'd wager it is a snap back. The ribbed design is almost identical to a 1990s quartz Khaki my wife has. But-- if it is like the Khaki it's one of those backs that fits so tightly that it cannot be replaced without a case press. It won't simply snap into place.

retroworx
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Re: 80s Diver Prototype?

#12 Post by retroworx » Thu Feb 04, 2016 7:41 am

hamiltonelectric wrote:It says 'automatic' on the dial. ;)
I know, but who knows what they were up to! :lol: Could have been a temporary dial or something. :P Okay, crazy idea, LOL.
JerseyMo wrote:If you look with a loupe around the case back can you see a groove or notch of any kind?
I louped it and can't find any entry point, either in the outer ring or the inner grooved ring. :(
cj415 wrote:My bet is screw-down back, though. Try the rubber ball method.
Had tried the rubber ball earlier and I can't get it to move a hair. :cry:
I'd wager it is a snap back. The ribbed design is almost identical to a 1990s quartz Khaki my wife has. But-- if it is like the Khaki it's one of those backs that fits so tightly that it cannot be replaced without a case press. It won't simply snap into place.
Or open, either. :roll:

Seriously, if this thing opens from the back and does not turn out to be a top-loader, there is no way anyone can get in here without making pry marks. Rene, does your wife's snap back have an entry point at all on the back?

I can't believe I am going to have to send this out to someone just so they can open it for me to get pictures of the movement. I have no local watchmaker, although I could go in to NYC and see if there is someone there I can trust to figure this out. . . .
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retroworx
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Re: 80s Diver Prototype?

#13 Post by retroworx » Thu Feb 04, 2016 7:42 am

Anyone know which auto movements Hamilton was using in the 80s?

I confess I had no clue they were making anything but quartz, then. . . .
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hamiltonelectric
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Re: 80s Diver Prototype?

#14 Post by hamiltonelectric » Thu Feb 04, 2016 7:57 am

does your wife's snap back have an entry point at all on the back?
Nope. It is VERY hard to open. In fact, it's pretty much impossible with an ordinary case knife. You need an opener that holds the watch in place and pushes a blade into the gap perfectly horizontally, like this one.

retroworx
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Re: 80s Diver Prototype?

#15 Post by retroworx » Thu Feb 04, 2016 8:13 am

That's interesting, I hadn't seen one of those before.

Looks like it works if the back has a lip — your wife's case doesn't though, but this would still work? (I don't see a gap for the knife edge to slip into here, but I guess if it is fine enough?)
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hamiltonelectric
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Re: 80s Diver Prototype?

#16 Post by hamiltonelectric » Thu Feb 04, 2016 11:33 am

It definitely doesn't require a lip, but there does have to be a gap for the blade to press into.

retroworx
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Re: 80s Diver Prototype?

#17 Post by retroworx » Thu Feb 04, 2016 1:29 pm

Okay, so we've resolved what may be involved in getting this case open. Next question:

What the heck does it do?? :lol:

I think I understand what the numbers track on a diver is for, but the two tracks have me completely stumped. . . . Image
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HamiltonIllinois
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Re: 80s Diver Prototype?

#18 Post by HamiltonIllinois » Thu Feb 04, 2016 1:31 pm

I wonder if the bezel was engraved or stamped? And why in the world they didn't finish with all 60 minutes? (Or actually 59, I presume.)

Did you buy it Susan?
Rick
..................................................
scio me nihil scire or scio me nescire

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Re: 80s Diver Prototype?

#19 Post by retroworx » Thu Feb 04, 2016 1:37 pm

Yes, Rick, it's mine.

Did you see the part on the inner numbers track that reads "MEDAL"? What's that about??
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mastalonso
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Re: 80s Diver Prototype?

#20 Post by mastalonso » Fri Nov 10, 2017 12:23 pm

Hello, I'm Alonso from Peru.
I have an identic watch, already searched the Internet, catalogs and other experts, but I havem't been able to obtain information.
Hamilton USA And Switzerland doesn't find it it's archives

could someone help me please?

Best regards

Alonso M.
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