The Butler 22 caliber single shot pistol was made by Derringer. The Derringer company was founded by Henry Derringer. Derringer pistols are the smallest handguns available and were most commonly used by women.
5-50 usd
10-100 USD or so
A pistol is a single hand firearm with a short barrel.
5-100 usd
Impossible to answer without the maker's name. Even then....
I have the same firearm I belive, I have fired Remington .22 short rounds. Mine has a slight problem with having to strike twice to set the round off He Actually Hates It! I also have one and it also has to strike twice to fire. Or it did. A gunsmith "improved" it to where it now requires 4 strikes to fire. You can get some parts as it is a copy of a Colt. Google "butler derringer parts".
I have seen them recently at auction in the $175 dollar range.
It is called a pistol
A short recoil, semi-automatic, single-action / double-action pistol, the M9 uses a 15-round staggered magazine with a reversible magazine release button that can be positioned for either right or left-handed shooters.
You need a gunsmith
i have a rhom pistol, but never heard of a romo, mine #100
Chipmunk