This Colt manufactured first 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. First variation slides have "Dec. 22. 1903" 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 variation slide: 5933