[Jim P.]

Please see the pictures; I think I've deciphered two codes as 1. the struck barrel weight (3lb 2oz) and 2. March 1935 Service Section Remington Repair Code (AD 3).

However, on either side of the weight and proof marks are two other codes that look like HT/A A (on the left) and the numeral 4 (far right). Are these inspection stamps?

Like much in life, I don't have clue but will wager someone does....help?

Thanks in advance.