The "Molar Mac" has arrived, or rather, I have picked it up. My back even survived the experience!
Actually, it's not nearly as heavy as a 20" ColorSync, which I have struggled mightily with in the past. And it is a beauty (where did the accusations of ugliness against this model come from, I wonder?): there is no discolouring, & with only a couple of small scratches marring one side, it is pretty much pristine. A bit of a clean is needed, but nothing more.
A 16GB ATA drive and 384 mb ram are installed (3 x 128s), with a USB1 card and a fast network card and one slot remaining (unlike those unloveable G3 iMacs, these things have 3 PCI slots, folks). To top it off, the fellow I got it from had overclocked it to 466MHz (using a replacement G3 zif, with 1 MB backside cache – you overclock them using jumpers as you do the other beige G3s, so that's easy).
In this configuration, and running 9.2, it absolutely flies. It is now by some margin my fastest OS9 machine.
A worthy bookend to my beloved Color Classic, methinks – and its true successor in the style department.