Buying a gun today and the shop owner asked if I knew anything about old revolvers. He has a top break Harrington and Richardson Sportsman in 22lr. Looking in the Blue Book you can find something similar in both H&R and Harrington and Richardson entries but the AB serial number is outside of the date ranges listed.
Features I see/saw:
Top break
Safety rim cylinder
Looks like a removable front sight
2 piece wood grips
Finger rest under back of trigger guard
Firing pin in hammer (no transfer bar)
Features I see/saw:
Top break
Safety rim cylinder
Looks like a removable front sight
2 piece wood grips
Finger rest under back of trigger guard
Firing pin in hammer (no transfer bar)