Piaget

Hi all, hoping someone can help identify this vintage Piaget. Outer case back: “FOND ACIER INOXYDABLE”, serial 135100 Inner case back: “PIAGET SWISS”, number 60187 Movement: manual wind, “PIAGET SWISS” on plate, “UNADJUSTED” stamped, “AZM” on balance cock...  

I don't have the answers to your questions, but hopefully other members will. Best, Emmanuel

the 3 letter stamp on the balance cock does not exist for any american importer who had to have the stamp put on under the tariff act of 1930 which lasted to 1/1/1972 and then on just fizzled out after that. the nearest is AZL=Aureole or AZK=Sellita i wil... 

PROTAX- RUBYSHOCK- RUFAREX- just have to find a ebauche/calibre that piaget used one of these-any idea's quattro?

Surprising that such a Maison did not have full stainless steel case. Lastly, the "Piaget" printed on the mainspring does not seem genuine. I am not a specialist however, just my 2 cents feeling !