1917 Sanderson 1907 Pattern Bayonet Reg't Marked 'STTN OTC' & Scabbard With 1915 Dated 1914 Pattern Frog. Sn 8105. This is an original, excellent condition 1907 pattern bayonet for the Enfield rifle manufactured in April 1917 by Sanderson. The ricasso is stamped with a partially visible 'Sanderson', GR Kings Crown and crisp '1907' (Pattern) & '4 '17 date ( April 1917). The reverse is stamped with inspection marks. The blade is clean. The wood slab grips are in similar excellent condition. The pommel is stamped ' OTC' (Officer Training School) and 'STTN' together with weapon number '165'. It is complete with it's steel mounted leather scabbard and original 1914 Pattern brown leather frog with single belt loop and brass buckle fastener. The helve strap on the rear of the frog is stamped by the manufacturer 'JAS Dawson & Son' and dated '1915'. The securing strap on the front of the frog is a later addition (this is reflected in the price). All leather and stitching of the scabbard & frog are intact. Price for this nice OTC marked bayonet and scabbard with 1915 dated frog includes UK delivery. Sn 8105.