Description Identification models of motor torpedo boats in 1:500 scale, painted dark grey. Identification ship models were fabricated by Framburg, South Salem and Comet. Models may have some cast metal parts and some wooden parts. The ships are: 1 PT-20, Motor Torpedo Boat, USN, Elco 77' PT-20 Series 2 PT-103, Motor Torpedo Boats, USN, Elco 80' Series