This is a very old pocket watch. I have no knowledge except that it is old. I couldn’t tell you if it’s made of precious metals or not. I can tell you what it reads behind the rear cover and behind the face. Back reads No. 7049 : Patent Lever : Full Jewelled : Hands : Arnold Adam’s & Cie : London. Rear cover has HF : 7049. Face looks to be porcelain (after it’s pulled off) I see numbers 7049. Watch is approximately 2” wide…What you see is as far as I went. I’m counting on that the purchaser knows what he’s looking at..Getting “AS-IS” for “Parts”. If you have questions-Just ask and I will try my best to answer. Please look pictures over closely. As always-Thanks for looking