The Harrington & Richardson Model 088, with the serial number AZ438056, was likely produced in the early 1980s. Harrington & Richardson used a specific serial number system, and the "AZ" prefix indicates that it was manufactured during that time period. For exact dating, further details or manufacturer records would be needed, as production timelines can vary.
1973
How old is my Topper 88 HARRINGTON AND RICHARDSON GUN serial number
Harrington & Richardson used the Prefix AT in 1983.
"P" prefix indicates 1953
1987
"AY" serial prefix = 1982.
1971
1980
M prefix to serial # = 1952 manufacture. Jim
The value of a Harrington and Richardson 7mm Remington mag serial number 52897 depends on its condition. This gun in excellent condition is valued between 125.00 and 200.00 as of 2014.
Immediately after 119437.
No way to answer without the serial number.