I too have a 3rd series 3940
By: Mike-On-A-Bike : April 19th, 2020-20:40
Mine’s from 2004 and has the APRIOR inline with the minute markers, so it is indeed odd that yours does not. However, based on my humble opinion... (1) you sent it in to Patek for a service, and if it didn’t come back with any remarks, I think you’re good...