Builder,

The F indicates it was made after the H&D Folsom take over of Baker Gun Co. so between 1919 to about 1929. The Baker Gun & Forging Co. dropped the various Batavias --Special - Leader - Damascus - Ejector-- before WW-I and replaced them with the Black Beauty and Black Beauty Special. Folsom revived the Batavia Leader, but with steel barrels, while the BG&FCo. Batavia Leader had Twist barrels.