Audemars Piguet

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nothing else to add to this historic piece

It’s a later design AP quantieme perpetuel which as likely know was the first production ultra thin automatic perpetual calendar which was monster success sold from 1978 for bones of two decades. Such a success that many saved AP from quartz crisis and va...  

It is so easy to be utterly amazed by such AP revelations because of how conditioned many are to equate AP with RO (me being top of list), even though AP has such a rich history before the entrance of the RO.

Nice watch👍