Currently, no one.
10-50 usd
gun shop, gun show, want ad, on line auctions
It was not designed for 25 cal ammunition.
The question can't be answered without knowing the exact 25 cal you are referring to.
25-50
NO. Do not attempt this.
Cal Stoll died on 2000-08-25.
Cal Abrams died on 1997-02-25.
25
50-1000 depending on what it is
1861 Colt Revoler
Made in 1956. Value will depend on condition- somewhere around $175