While visiting some antique malls in Allen Michigan I came across what I believe to be a Zenith export. I think the model number was 8W646AT, but googling it comes up empty. Its a large table top with a slanted front, dial on the right side with the dial scales running top to bottom, 6 bands, 2 knobs with pushbuttons. Anyone ever heard of or seen one like it?

Edited to correct the number of knobs and to say that the one in this post looks somewhat like it but the model number I posted was clearly marked in white on the cabinet.

viewtopic.php?f=1&t=191307

If there's a T on the end of the model number that usually indicates an export model.

Yes, and the "T" indicates tropically treated, a process employed where the coils are 'humisealed' against high humidity conditions. Humidity fluctuations caused changes to the inductances of RF coils.