The serial number of the gun would indicate it was made in 1903. However, in J. A. Crawford's book, "The History Of W &C Scott Gunmakers" we find this quote:
"Scott added a sixth style of gun to their line, a trap gun, shortly before World War I. Distinctive features of trap guns included a ventilated rib with twin ivory sights, half or full pistol hand, beaver tail forend, Monte Carlo stock, Silver's anti-recoil pad, and 27 to 36 inch barrels with half or full chokes. Scott's Single Barrel Trap Gun, a sidelock stocked with Italian walnut and tastefully engraved, sold for $400 in 1928. Seventy-two of these guns were made between 1914 and 1929."
Regardless of the date they appear to be very nice pieces.