10k GOLD filled....17j...12s....screw back case....BEAUTIFUL! THE MONOGRAM ON THE BACK HAS NEVER BEEN ENGRAVED! MOVEMENT SIGNED: Illinois, 2551333, and 11 Jewels. For additional markings see pictures. CASE SIGNED: B B and Regal. From what I have found online: model 3, made in 1913, 12s, and 11j. CASE CONDITION: Light signs of age only. Back screws on and off as it should. Cracked glass crystal which will need replace. Really good overall shape. MOVEMENT CONDITION: Runs as seen in video. The time can be set. It does wind. Movement looks nice and clean. It hasnt been tested for an extended time...so it may need oiled and or maintenance. I WILL BE LISTING SEVERAL POCKET WATCHES, SOME GOLD AND SOME SILVER, FROM THIS SAME ESTATE SALE COLLECTION. PLEASE SEE MY OTHER LISTINGS. It will be protected well and insured. Location E1, MER, FBMP