I've had up to 6/7 at one time and down to as few as few as 1, it wouldn't be possible now as 1 of them is my Sqn 100th anniversary Bremont which I'm never wearing as a daily! I'm currently at 4 but thinking of switching the SD4k for a 16600 and something else, plus have one of Lorne's watches earmarked to be made later on this year.