A new model introduced in 1963 was known as the Sawyers Rotomatic and used upright circular trays, called Rototrays, to hold the slides (100 per tray) The caption for the ad for this projector is "Show your color slides big, bright, and with push-button ease focus reverse advance all by remote control with the new Sawyers projectors"
Manufactured in the late fifties by Sawyers Inc in Portland , Oregon ( USA )
500 Watt Max DAK Lamp. Lamp and fan worked when tested.
Remote control. clicks when forward / reverse button is pressed.