... in terms of rarity, i strongly believe 3969pt, only 50 pieces made in this metal, having a jump hour function makes this watch quite unique. Due to different era made, a spread of over 10 years, i wouldnt judge its popularity amongst the two. Over the years, we have seen many power reserve pateks produced, but how many jump hour watch have you seen from patek production ?? Since 3969 is smaller in size, makes larger size watches more desirable in recent years. Try putting a 3969 on your wrist, then tell me what you think ... u be surprised.