One of the wartime alterations of the Fairbairn-Sykes Commando Knife, with the addition of a unique "spatula" or "pancake flipper" sheath that allowed for greater versatility in wear and concealment than a conventional leather hanger equipped sheath. One of the signature edged weapons of the Allied Powers, the F-S cast aside all notion of pulling double-duty as a utility knife, as it's fine, hollow ground edges and needle point were optimized to cut one thing and one thing only; the enemy. Measuring 11 1/2 inches overall, with a 6 3/4 inch double edged blade, finished in full blue and mounted with a full length tang with round pommel nut. The cross guard is also blue steel in a flat oval configuration, with a knurled and blackened brass grip in the traditional contoured profile. No proof marks or manufacturer's stamps are present, which is appropriate for this style. The sheath is the signature OSS "spatula" design with a stitched brown leather sheath riveted to a green steel frame, which fully supports the back, protects the tip and ends with a wide hanger with four mounting slots and a hooked segment for a rubber o-ring to retain the stiletto; the o-ring is damaged and partially absent. Provenance: The Putnam Green/Sycamore Collection