Did you check the PAM Reference Guide? It describes the watch in enough detail to determine this is a Pre-A PAM002. Now whether it is a DSN product is unclear the font of the 6 is different from what's in the PAM Reference Guide. But then dials can change slightly from time to time.
Also in the future, more pictures like the crown side and the caseback might also help identification. Providing very scant information does not result to quick replies.