The A2 is serial number 1965 I do not have a letter on the gun and I do not remember why I don't as I usually do get a letter on my higher grade guns. I do believe the gun was made latter than the 1891 date (you might be thinking of my quality 4 gun #32068).
This gun by serial number is shown as an A2 12ga with 30" barrels but does not have a shipping date in Houchins book page 529, this is why I think it may have been a display gun.
I appreciate your information and was thrilled to be able to purchase the gun.
I appreciate your information