This Colt manufactured third variation blue finished slide is for the model 1908 Hammerless Vest Pocket semi-auto pistol in 25 ACP caliber and is in good condition exhibiting a mixture of thinning original blue finish with a gray patina and a few specks of surface rust staining. Third variation slides have the "July 31. 1917" as the latest patent date on the left side. (file photo)

Note: Colt model 1908 Hammerless Vest Pocket pistols with the following serial numbers have been observed with this 3rd variation slide: 338825, 372705 & 379259