From the auction company pictures we can see the serial number 1502 and the Ogden, Utah, barrel address, making this for sure a very early gun with some later improvements, including Val Browning's inertia single selective trigger introduced in 1938.
As Schwing points out on the borttom of page 74, pre-War Superposed serial numbers were not finished in order and certainly not shipped in order. His example shows some guns in the 48xx range shipped to the warehouse in late 1931. Some of these were shipped out nearly immediately and others not until 1934 or even 1936. Meanwhile other guns in the 48xx range weren't finished and sent to the warehouse until 1937.
