Original GM 1974 Dealer Truck Salesman’s Desk Lamp. I have seen car lamps before but never a truck one. The cast aluminum model is the 1919 model. As is, the main image on the shade and so is the 1974 Cheyenne Super. The other model year images are 1923, 1928, 1929, 1932, 1936, 1942, 1947,…