Hmm not that many and definitely less than 10 different models
The Panerai Destros I can think off the top of my head are: PAM26 PVD (original) PAM26 DLC (new re-edition) PAM219 - Luminor Base stainless steel PAM56 & PAM117 - titanium Luminor w/ tobacco dial and there you have a couple of the polished stainless steel...
