Hi Chris and Welcome!
That looks to be a pretty late Trojan 20. It has the late (1917) style of safety slide-button which Parker didn't use on the Trojans until about all of the pre-1917 style were used up. I can only suspect that it doesn't have the rib extension common to Trojans from 1912 through the very early 1920's. What is the serial number on that one?
Dean
|