I assume you're talking Marlin here.In 100% condition I would only guess oh-------- maybe,$375
About $250.
There is no .25 Magnum. There IS a .22 magnum, made by Davis, and a .25 ACP. Value is about $50-$75.
What is the value of a Davis Derringer pistol magnum 2 shot?
$125-$200
50-600 usd
50-100 USD
$50-$100, depending on condition.
20-150 USD or so
50-160 USD
About $200-250 USD
50-125
About $150 if its in GREAT condition and has both the cylinders .22 and .22 magnum.