How to identify tube amp

This surfer dude is messing with you boys. Cryptic photos that
don't show the whole product. Did these mono blocks arrive by carrier pigeon? 
-Skeptic

@viridian thanks very much for your input!  I added a couple pics of the bottom to my g-drive file. It looks clean but definitely old. I suspect they’ve been sitting in storage for 20+ years. No burn marks tha I can see. The back plate is standard two speaker cable outputs and a single rca input.

Here’s the link to the pictures:

https://drive.google.com/drive/folders/1EJxV4DfNr4k7Mq8rZp96iPuHY10sKW_z

@firstnot if you don’t have anything useful to say then I ask you leave my thread. No need for rude and useless comments. Thanks.