This Colt 1908 Vest Pocket was shipped to the Hibbard, Spencer, Bartlett & Company in Chicago, Illinois on April 9th, 1909 in a 25 gun shipment. It features Colts high polish blue finish with type 1 hard rubber grips. Trigger, thumb safety and grip safety are a dull case colored finish while other small parts are fire blue.
This 1908 is early enough that it's lacking the 1910 patent date. The Jan.25,1910 text was added roughly around serial number 22,000.