I have old certina, its just simple and nice, it has certina caliber 23-36 17 jewels, but it was broken since it has got out the factory.
Ill post pictures later, I am interested do I, and where I can buy or replice thaht caliber?
I found out that caliber 23-36 is 1963: Certina, Swiss, 17 Jewels; Incabloc
10.5''', Dm= 23.3mm
f = 19800 A/h
power reserve 43
tnx and please help :)