Need help with rare 1942 Zenith :dunno:

[Einar72]

About 15 years ago I was at a swap meet and saw a Zenith chassis that looked like it was from a "Beverly" or other '42 console with a 7-S-xxx model number. The chassis had the 45-degree-angle cut on the left side (making it pentagonal). It was, upon closer inspection, an AM-only model with the same tube lineup (four Loktals, a 5Y3 and 2 6V6's). The dial-scale had almost the same arc and graphic font as the post-war "flip-dial" portable. I have little else to go on, and I'd love to at least identify the chassis, or find another one, or even just the dial. Any help would be greatly appreciated!