I have no good knowledge of how various markings relate to movement age except from collection examples with original case presentation dates and movementartbissell Today, 08:10 PM
Sometime during the night after my last photos, the movement stopped, as I found it the next morning, so it ran 20 days and a few hours. I gently restartedRandy Beckett Today, 08:04 PM
I see! I did stone the Surface to a dull, grey finish as you say.
The steel would of course not get embedded in the glass but how would using tin,