Mark;
Personally I believe some false statements have been made concerning Lefevers by folks who were not that versed on them from applying things from later catalogs to all years of production. A circa 1913 catalog (reprint) states that trigger pull can be adjusted on guns of E or higher grade. As stated I have 2 G's with this feature. This catalog also notes that a D grade has nickel plated triggers & indicators while C through Optimus are listed as having them Gold plated. No plating is listed for E or lower grades. Obviously some of these features changed over the years as evidenced by these known examples of F grade guns with the nickel plated triggers & indicators. .
I note from your picture your FE does not have the trigger pull adjustment. I do not know at what point this was dropped from guns below the E grade. What is the engraving on your right plate? Mine has a quail on the left plate & a duck on the right one. Both are in flight over an appropriate type of landscape. I see F's which have a duck which has been shot & is falling, but mine is in flight.
One thing for certain the Lefevers are extremely interesting guns.
