WoodVillain
Backwoods Rated
YES!! That one 2nd from the top was the best ever. I also had a faceted omni as well when it came out, plus a few customs, several of the M, original M, prototype/sbM/anodized, a few wood and glass stems etc...I think I know what you mean: there were two styles back-to-back with like lines lightly inscribed, and the stem itself was slightly smaller in diameter than the ends. I don't know much about them, but I think they may even have both come out the same year in very limited numbers, before they actually launched the faceted version, above.
Edit: Found 'em:
Only one I still have is a M prototype test piece that George sent to a few of us to test and give feedback on years ago.