The value of a IV FR Johnsons arms 32 caliber Fitchburg mass revolver is actually dependent upon a number of factors. Most important of these factors would be the condition of the revolver.
the serial number is under the grips
There is not enough information here to provide an answer.
All of them have a sn.
what model, caliber. ????????
1912
1911
1871
2006
1910
Caliber should be on the barrel. SN's were not required until 1968
If it's in very good condition, maybe about $125 or so. I have one and it is very accurate.
Have to know who made it to answer the question.