More information is needed to identify the manufacturer of this pistol. No references found.
Fabico was the US importer of German inexpensive revolvers of indifferent quality, Depending on condition, somewhere around $50
10-100 USD depending on specifics
Value of iver johnson 8 shot 22 caliber pistol
Small inexpensive pistol
10-100 usd
Impossible to answer without the serial number.
Probably Herbert Schmidt
depending upon condition of the nowadays uncommon pistol retail=appx. 550 but have seen revolver enthusiasts spend as much as 750 and walk away happy.
Possibly Herbert Schmidt
20-100 or so
Most German .22 revolvers found in the US are inexpensive guns that are no longer imported. If so, probably about $20-$50. But since you didn't give a manufacturer's name or model, it could be something better.
20-100