These switches are new old stock original Atari switches, part number CO12241 / CO19702 and came from a former Atari Service Center owner. The switches are used in numerous Atari products including the 2600A & 2600Jr models where they function as L/R Difficulty switches and Channel 2/3 switches. They're also used in the Atari computer line on the 400, 800, and all XL models (not XE). Supplies are VERY limited and once they're gone, they're gone.