Serial number would indicate a 1943 gun, but it conceivably wasnt actually shipped until after the war. May or may not have been. As to value. A truly new-in-box OP would garner significant collector interest. Even a bone-standard gun in true NIB condition, all correct, with the correct box is going to bring whatever the market will bear and if you get two crusty old Colt revolver collectors it might just reach four digits. sales@countrygunsmith.net