Flyback chronograph, three registers

It arrived with no crown at all, in a sandwich bag, from an estate sale.

Chronographs

W6 b

Record

Year
1963
Work done
Crown turned, flyback reset
Movement
Column-wheel flyback, 17 jewels
On the bench
Sixteen weeks

The buyer paid very little for it and was told it was scrap. It was not scrap. It was a flyback with a loose minute-register hand, a crazed crystal and a missing crown, none of which is fatal.

I turned a replacement crown to the original profile, refitted and shortened the register hand, cleaned and reset the flyback mechanism and fitted a new crystal. The reset now lands on zero from any position, which is the only test that matters on a watch like this.

W6 a
As it arrived: no crown, a hand loose on the dial.