Audemars Piguet

Hi guys.. Bounced around a few different forums to try and get an identification on this watch and wondered if anyone could advise? Watch is not mine (I'm asking on behalf of someone else on a different watch). Pictures are here: http://imgur.com/a/oSmyZ ... 

Looks nice, 1970s model, will most probably be housing a K2120 movement (thin automatic). Stylish!

Appreciate the response. Thankyou :)