A classic BSA 0.177 improved model D air rifle made between Dec 1913 and Sept 1914 and despatched from the factory between Dec 1913 and May 1917.
Serial No. S75832, PAT No. 30338-10
The S in the serial number indicates the action is fitted with a double sear trigger
The BSA stock is, I’m told, a later stock from the 1930′s due to the BSA logo being in the chequering and the rear sight is not original (probably from an Airsporter or Cadet), but it will be original if I can find a No.10 rear sight for it.