I am keen to buy my first Panerai. I narrowed down to PAM 312, 320 and 321. I know they are similar. I have one question. Do the 312 and 320 show the power reserve on the back of the case? If not how do we know the state of power reserve? Also why is 312 called Luminor Marina but the other two are not. Please help me!
Regards
Frank