The Model 3 is real, and I have a pair.
It is about 6.5' high, and 18" in diameter. Is is very similar to the Model 2SW, but it uses a step-up transformer instead of the direct-drive amplifier. Instead of having a stand-alone woofer, two 10" woofers are incorporated into the cabinet -- one on the bottom and one on the top. They are very, very heavy.
The G1 was Rick Beveridge's attempt to make the Model 3 more manageable. It uses a stand-alone woofer, and puts the electrostatic element and acoustic lens in a much smaller enclosure. It too used a step-up transformer.