H&R model 949 was produced from 1960 to 1985. The AJ prefix in the serial number indicates 1972 as the year of manufacture.
1972.
50-125 or so
Mid 80s
50-125
It depends on the model. I just sold a HR model 949 for $150.
Between 1960-85
Mid 80s
I would suggest finding a good gunsmith and asking for a lesson.
1967. They were made from about 1950-1985.
"W" prefix indicates 1960
Best left to a gunsmith.