If you're still on here, I'd like to talk to you about your Aztecs. I found mine pretty much the same way, a good deal at the local thrift shop.
Pics of mine posted here:
https://audiokarma.org/forums/index.php?threads/wtf-izzit-the-cliche-mystery-speaker-thread.872995/page-2#post-14416665
Pics of mine posted here:
https://audiokarma.org/forums/index.php?threads/wtf-izzit-the-cliche-mystery-speaker-thread.872995/page-2#post-14416665