Immediately after 119437.
Since it has a serial number, it was made after 1968. They were made at least through the 1990's, but I know of no source of serial number dating info for recent H&R guns. * Harrington & Richardson manufactured the shotgun in 1974.
Your serial number letter prefix of the letter A means that your H&R shotgun was made in the year 1940.
Seldom exceeds 100 USD
1987
"P" prefix indicates 1953
"AY" serial prefix = 1982.
H&R / Harrington & Richardson
Probably Harrington & Richardson
Harrington and Richardson made it.
M prefix to serial # = 1952 manufacture. Jim
50-250 usd