I had a saved search for these Ref. 5M63-0A50 for ages, but they've become seemingly much more sought after of late, so I had put it to the back of my mind...Until I started looking at field watches again.
Luckily I found one in excellent condition (albeit without the orignal bracelet) with a listing ending at an awkward time so snapped it up.
The button at 2 is for battery check, IIRC.
You push that and the seconds hand pings round to show how much charge is in the capacitor, then returns to where it should be.
I had a saved search for these Ref. 5M63-0A50 for ages, but they've become seemingly much more sought after of late, so I had put it to the back of my mind...Until I started looking at field watches again.
Luckily I found one in excellent condition (albeit without the orignal bracelet) with a listing ending at an awkward time so snapped it up.