Model Set of 9 vessels. Used in WW II in recognition training of soldiers and pilots. The models, also known as I. Or spotter’s models, were cast in metal or wood and detailed with the primary distinguishing characteristics to help troops recognize friend from foe. Fascinating relics of World War II history, these models are in wonderful condition. Uséd in WW II in recognition training of soldiers and pilots. Our items are available for pick-up. No additional information at this time. You might also like. Console, Asymmetrical Double Shelf, 79″ x 17″ x 38. Half Hull Model, NY – 36, “Nettle”, circa 1980’s. Richie and Sons, circa 1930’s.