8-Bore;
This was something that Bob Elliott told me in a phone conversation I had with him about this gun. I do not know where he got his info that Ithaca fitted sme Infallible triggers in this time frame. The trigger housing carries patent dates from 1912 which were issued to A H Worrest of Lancaster PA. The trigger itself could definitely date to the right time, though i cannot absolutely guarantee it was installed at time of build & was not a later add on. The gun does have a two position manual safety & does not appear to have ever had the lock-out screw for the normal Lefever three position safety. It thus does have all the appearance of being original to the gun.
Perhaps Walt might know if there was indeed a connection between Ithaca & Infallible triggers.