It's interesting how sometimes you will find a Hamilton model changes during it's run. Some models have a long production run - like the 1950s Rodney - it has several different dials. Other models change bracelets from year to year.
One model that had a subtle change was the 1958 Sea-Crest. In 1958 and 1959 it had an embossed dial with numerals and markers.
Then, in 1960 and for 1961, the dial changed and was no longer glow in the dark. It looks like the bracelet also changed.
My project watch is an interesting example - it's the earlier dial but it's been customized for use as an award by the Air Force's Air Material Command.
I was told that it was not running well so I decided to put it on the timer. Normally I don't bother with checking the time before I service it because it really doesn't matter... if it's got a serious issue I'll find out anyway. Sure enough, it's running poorly... probably very slow but even the timer isn't sure.
The case back is engraved with a presentation for 1st place in the 1959 Tennis Open. That's pretty cool, huh? The case back has a prominent lip so you can tell this back will pop off.
Tucked inside is a 17 jewel Hamilton 673 movement. The inside of the case back has a spring to keep the movement ring and movement in place.
Without the hands in the way, you can see the dial is in great shape. There's a spec of dust by the 8 but that should come off easily.
Everything is cleaned and ready to be reassembled.
The balance is frozen in time thanks to my camera but in real time it's swinging away with a nice motion. Now lets see what the timer has to say.
It's running a smidgeon fast. I should be able to tweak it a bit from here.
There... I'll leave it running 7 seconds seconds fast per day.
The finished watch looks as good as it runs. I don't think this watch has had much wrist time over the last 65+ years.
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