Model 27?
Unfortunately in that case, the cartridge actually detracts from value on that one, since nobody has made 25 rimfire ammo in an age and a half. They tend to fetch a pretty penny in 25-20 and 32-20.
I haven't seen one in a long time, but prices online are sort of all over the place for them. Seen them go between 200-1000. A lot of it is just condition, and happening across a buyer who really wants one.
