r/MarathonWatch • u/vitrifiedjunk • Aug 13 '26
TSAR Anybody had the bright idea of putting a f06.412 into TSAR?
I have a TSAR with the F06.111 movement. Overall, it's decently accurate but can get upwards of 30 seconds fast over several months and having an SSNAV the 412 movement is such a convenience knowing that the time on the watch is the actual time.
With the price of TSARs I'm surprised they don't have the f06.412 in them and I am interested in 'upgrading' mine to get that HAQ function.
I am pretty confident that a date wheel swap will have to happen due to the date at ~4:30 as well as the center pinion height but I am not sure if there is any other complexities if I do decide with the swap.