Flylock Small Double 14K White Gold automatic knife with shackle

Flylock Small Double 14K White Gold automatic knife with shackle was made by the Flylock Knife Co a division of Challenge Cut Co of Bridgeport, CT sometime between 1918 and 1929. The knife measures 2 7/8 inches closed and 5 7/8" open with nickel silver liners, buttons and shackle. Both blades are full and retain most of the factory finish with a little peppering and both blades are stamped Flylock REG US PAT on the front tangs. The backside of the tang on the large blade is stamped FLYLOCK KNIFE CO B'PORT CT and the small blade backside is stamped US PAT 3-5-18. The 14K white gold plated scales are in wonderful condition with barely any wear and have an oval signet on the front. The knife works great with both blade tips below liners when closed, both open fully with some kickback on the small blade and both have good lockup open with just a little movement. EX+ condition.