ldm3048, welcome to the forum I am not quite sure but heard it was around the $140 area. If I am mistaken I would like to be rectified by other members.
hello ,,your rifle is a sears model 3t-a made by winchester and sold by sears,,should be the same as the model 190-290 series semi autos sold by winchester,,values are between 100 and 150 for the winchester models but being its a sears model of the same rifle this will drop the price usually,,proably between 75-125 not because it's inferior just because it doesn't say winchester,,
bigcurt