A Genuine Hebdomas Pocket Watch Vintage early 1900's. The back of the cover is marked 16, 18 P and the watch is generally in good condition. I've had it for 25 years and it's basically been locked away. It appears to be working fine but I would think it needs a service. I am not sure of the metal but it is probably gold plated. I'VE HAD IT GOING FOR OVER 24 HRS SO FAR...But it has stopped after 48 hrs and I can't get it going again...definitely needs a service