As far as I know, my grandfather got this around 1950, seldom used it, and gave it to me about 50 years ago, and it's been stored in a soft leather bag since. I have wound it a few times to make sure it runs and keeps accurate time, which it does. I hate parting with it, but current financial setbacks necessitate the sale. New photo shows inside and back cover, 10k gold filled.I also have an excellent Hamilton 917, 17 jewel pocket watch for sale on here too. It has a pocket knife on chain attached. The item "Hamilton 950B, 23 jewel Railway Special Pocket Watch Excellent" is in sale since Thursday, May 11, 2017. This item is in the category "Jewelry & Watches\Watches, Parts & Accessories\Pocket Watches\Antique". The seller is "coolcatsix" and is located in Citrus Heights, California. This item can be shipped to United States.