Chuck, I think you added one too many numbers maybe should be 208754E. That would date it to 1907 and it would have auto ejectors with the "E". The other dates July 13,'86 is for the lock mechanism for L.C. Smiths and May 28,'01 is for Auto Ejectors. Nitro Steel was used on a few of their guns starting with the No.5 Gun (became Crown Grade in 1913. No 4 Gun only had Nitro barrels on the Light-Weights FW). No 3 Gun. and the Pigeon Gun, that is before 1913, after 1913, Crown Grade, Specialty Grade. The HA CO mark is "Hunter Arms Company". Post some pictures, this is a great gun also, especially with the 2 barrels.