help with dads old gun

I have a 12 ga shotgun H&R with the numbers on the bottom below trigger guard of A12161 no model patent number worn i think it is a early model topper have written H&R to get an email back saying they couldnt identify need parts to restore because of my dads initials engraved in barrel

hello,,i beleive i answere a question this week on an old H&R shotgun that started wit a and i think it was made in 1940 with that suffix,,value on these old singles are around 100-125,,most of the time there usually in fair-poor shape and most of the time have cracked stocks ,,most have definatly been used hard and put away wet....
bigcurt