With the addition of todays finding as 4-26-25.

The following for barrel markings as of today.

Field Grade WILD FOWL marked Shotguns
1. RLB - Ordnance Flaming Bomb - Ordnance Crossed Cannons
2. FJA - Ordnance Flaming Bomb - Ordnance Crossed Cannons
3. Ordnance Flaming Bomb
4. (Possible Armory Markings) - ILL or VA followed by numbers

Field Grade Featherweight
1A. RLB - Ordnance Flaming Bomb - Ordnance Crossed Cannons (See photo FWE 198805)
2B. Ordnance Flaming Bomb
3C. FJA - Ordnance Flaming Bomb -Ordanance Crossed Cannons and possible Armory markings of ILL 6120 with the USA-F markings on both of the barrels. (See Photos)