There is one currently going for $179.99 on GunsAmerican.com.
No sn data
Small 22lr revolver
Yes it is.
50-150 or so
is the a pistol or revolver ??
Probabably 22LR. Have it checked by a gunsmith.
H&R makes a 22lr 9 shot revolver, Model 904
50-75 or so
Blue Book of Gun Values
IF the revolver is marked ".22 LR" yes. If it is marked ".22 WMR" or .22 Mag" or " .22 WRF", then NO.
Anything is possible if you have enough money, time and a good gunsmith.
I've bought mine secondhand for 25 euro.