Audemars Piguet

just a short information: i saw a report about 5402 in italien forum - it is a subsumption from a lot of different things, we can find in internet. I can not read italien - so i can not judge the facts generelly. Only thing i see - without italien languag...  

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I have a 5402 B series from 1975/76 bought brand new in Geneva by my step father in 1976 and the crown is signed, it went for a total overhaul to AP Le Brassus in 2010 and all was confirmed as original!!! I am a little confused! Kind regards. Francois

a signed crown is also "original" - and specially in APs eyes, because if AP (or a authorizised dealer/watchmaker makes a revision at any time they change the crown at this modell. The reason is, that in the crown there is the blanket (or what it is call... 

... my B-series went in for service last year with a broken winding stem and came back with a new plain crown. At least it looked new. Was sent to the factory in Switzerland.

that means, that everyone should ask, who send his 5402 to revision, if it is possible to put a unsigned crown on the watch (if possible). Perhabs they found a box with crowns somewhere back in a rack in switzerland. Thanks for information Stephan

I have just check the invoice from Audemars Piguet dated April 2010 and yes, they do mention replacement of "crown, water-resistant, stainless steel, AP symbol". I think however that they should have given the "original" back to me!!!!! I'll ask them, but... 

If there are evidences of D serial with unsigned crown we can suppose all the 5402 production was originaly equipped with unsigned crowns. There was no reason for AP to change it, given the limited number of production of the reference. The point is...are... 

you can tell them, that i have myself D-series with unsignet crown (and i saw much more!) also there can be found pictures in german magazin Armbanduhren 4/2004 (also from opened D-series watch !) The way you communicate in both forum (orologi passioni an...  

Here and there ;-) I reported your arguments abot D-serie 5402, crowns with and without AP logo, relation between external and internal serial numbers, i'll try to keep you updated about any news. I agree with you on the necessity to look forward the ital... 

Ciao Stephan, I've sent you a PM a couple of minute ago. I'm the one who wrote on "orologi e passioni" - "Guida al Royal Oak ref. 5402" including years of study and putting together all the informations I've found all over the world in these years. It was... 

we speak in direct way (and can do this in english) Thanks for PM (i answered you). It would be great to see your Guide about 5402 in english. Without understanding italien everyone can see that it is a really good assumption with a high bandwidth. This c... 

Thank You Stephan, it will be fantastic and very exciting collaborating with you developing an "International guide" Have a nice day Marco