What is the value of a Winchester Model 70 257 Roberts Post War Serial Number 9263?

Actually your Winchester model 70 bolt action rifle was made in the year 1937,which makes it a pre-war model 70.This was the first year Winchester ramped up production and made 9334 model 70 rifles.A pre-war model 70 rifle in .257 Roberts will bring between 775-1,850 dollars for a rifle showing between 60%-90% of it,s original finish,and a receiver that has not been drilled and tapped for a scope mount.If by chance that you have a super grade model 70 you can add 100% to the above listed values.All pre-war model 70 rifles should have only 2 holes drilled in the front of the receiver(none in the back) A extra set of holes will decrease the value by 50%.If your serial number has a Letter D suffix indicating a doubled up serial number;this variation will command a premium because of it,s rarity.