"AA" prefix indicates 1964. Value is dependent upon condition - will range from $65 for poor condition parts gun to around $275+ for an excellent condition piece...add $35-45 for box and papers.
Serail number and features
"AD" prefix indicates 1967
About 1973
That should be 1975
Harrington and Richardson made it.
M prefix to serial # = 1952 manufacture. Jim
"AX" prefix indicates 1981
The prefix letter shows the year of manufacture. 1956 is letter S
IIRC, Cornell Publications might have a book that can help
what is the value of a harrington and richardson 1895 revolver
Unlikely that detailed sn data has been published.
Yes. Harrington & Richardson Arms and Cycle Works.