What is a Winchester model 67A worth?

there are 3 models, 67 bolt action,677 same as standard except for no sights scope mounts were mounted on the barrel,model 67 boy's rifle same as standard but with a shorter stock 20 inch barrel... I see nothing about a 67A can you give more info on this gun? Basic model in very good condition $150.00 to $250.00 some rare versions are worh 2X this much.....