PAM 441 factory make?

[dtehbl]

Hi guys.. my friend is trying to sell me his preloved PAM 441 for around USD241. He told me that its a very high grade rep.

From the photo below.. can you guys identify the watch is from which factory (Z, KW etc.)? Or would you guys need more pics to identify? Thank you in advance for your help

 

[ALE7575]

It is a KW fitted with decorated A7750 like P.9001 NON-inverted (last model). It is hidden the Jewels inscription, but it would have to say TWENTY-NINE (29) JEWELS. Anyway most likely it is correct because it seems last version for some little details.
Ceramic version
But I don't understand production engraving O xxxx/1000 it should be O xxxx/1500 like all KWs

ALE

 

[dtehbl]

yes, it is written TWENTY-NINE (29) JEWELS. And thank you for your sharp observation Ale!! Didn't notice the xxxx/1500 error. Guess this would not classify as high grade rep?

 

[ALE7575]

Yes this is a serious flaw to be detected in a detailed inspection and an obvious tell
99,99% will not be able to detect it but the flaw is clearly there

What I don't understand is the origin of this caseback. I have never seen that is a rep PAM 441

ALE