1921 Gold Filled Hamilton Pocket Watch, Railroad Grade 992, Size 16s, 21 Jewels, Works. Movement with, Hamilton Watch Co.21 Jewels, Double Roller, Adjusted 5 Positions, 1578440. Inside back of case with, Keystone Watch Case Co. Boss, 10K Gold Filled, Patented, 9637103. Crystal with small non-distracting scratches. Case with some scratches and a group of notable nick marks to right side shown in last picture. We do not test items to see how long or how accurate they run. All items we sell have had a previous owner(s). None, and I'll repeat it, none of our watches online are currently serviced unless they state so in the description. If an Item that is listed states, "Running", it simply means that when wound or plugged in that it is running, not guaranteed to keep time, just that it started to run.