25-50 USD or so
15-150 USD or so
1910-1935
1969
no
75-125 USD
Early Harrington & Richardson revolvers did not HAVE model numbers, but model NAMES. In your case, the model name is "22 Special".
Serial number 787416
There are too many variables to give you an answer.
20-100 or so
50-100 or so
25-100 USD
50-75 USD