just a quick post on this first model Nivada Chronomaster from 1963, from before they were labelled Chronomaster
They all featured the Venus 210, which is a 12.5" chronograph movement, but has some nice features such as not using wire springs. It's a pretty uncommon movement and parts supply is weak.
EDIT: OK, thanks Dan, also came with a Val 92.
This one has been in my todo draw for a long time, waiting on a few parts to come together - this is as close to a before photo as we're going to get:
I think its sufficient to say that the dial, movement and movement ring, came separately from the case - finding the exactly correct case was unlikely and the finding of it, unplanned (it came in a collect of watchmaker's chronograph cases/junkyard) and something I never thought would happen. Once it did - full speed ahead!
Well, OK, actually 3 more years of sitting in a drawer.
The pushers in the case were stuck and damaged. To my eye it looks as if someone attempted to remove them with side cutters! Anyway, the size of 4mm head and 2.6mm friction fit is extinct, so I made bushes to fit standard 4mm head with 2.2mm fittings. This is a progress photo, with the original on the left.
The new lume on the hands is not a good match, but I can't match the water damage effect from the dial lume, and I do not want to relume the dial. So this is a choice I am happy to live with. I will continue to look for the right sub dial hands.
Yeah, I'm pretty happy, its not perfect but it is joyfully wearable.
You can find some more information on these at:
Croton Nivada Grenchen Chronomaster Aviator Sea Diver - Cal.Venus 210
It joins my later (3rd gen) Val 23 powered version in my collection (ugh! It is so hard taking photos of black dials, using an iPhone isn't helpful):