Advice on Speedmaster 105003 crown
Found this in the bottom of my bits box
😟
Don't expect water tight but wonder if anyone can see any reason why this will not work on a 105003.
Thanks in advance........
As accurately as I can measure the diameter is less than 7mm (~6.5mm) and thickness ~4mm. It has 24 teeth so from Moonwatch Only I think it matches a A1 crown.