Restoration of a vintage 50’s Certina mechanical dress watch – ASMR - Manual work - Caliber 321

In this video I make a restoration of a vintage watch which is a Certina from 1956 with a mechanical watch movement, caliber 321 with 15 jewels and shock protection. It’s a manual hand wind movement (you wind it via the crown to give it power). It was a joy to restore this vintage watch, very robust and high quality.

The watch works but doesn’t hold the time very good, and I’m having trouble to hand wind it, it takes a lot of force to wind it. In general, it’s in pretty good condition and the glass (it’s plastic) seems quite new.

In this video I did some few mistakes, I didn’t want to re-film it, so you see everything! The main spring got broken when I was winding it via the winding tool, I didn’t see exactly what was happening, but it probably was my mistake. I’ll put a rubber gasket in the watch but I didn’t do that in this video.

After the restoration the watch works fine, I noticed it’s maybe 10-15 seconds to slow over 12 hours, fairly good for a vintage watch but I will adjust it when I get a timegrapher.

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In the video:
-Disassemble the watch and look for problems
-Inspection of all parts if they are worn or broken via the microscope
-Manual cleaning, I do this with Rodico (Bergeon), some toothpicks, peg wood. Then let all parts be in bensin and later a double bath of IPA (Isopropyl alcohol). After the IPA batch I blow all parts with air until they are totally dry. The pallet fork can’t be in IPA for too long!
-Inspection if all parts are clean via the microscope
-Assemble and oiling parts

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Music:
Private
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