It is a Black Cat JB-150, and yes they were built by Wawasee Electronics in Syracuse, In.
That model, along with the JB-12 ( used a 6BQ5 tube ) were very popular to use as drivers for larger amps.
AM mode only, not made to work on SSB.
The Seeker on the meter is just the brand of the company that made the meters.
6BQ5 tube = JB 12
7581 tube = JB 150
2-8417 tubes = JB 200
2-3-500Z tubes= JB-2000
There were also some other models, the JB 76 was a two piece amp made for mobile use, and I remember a JB-400 but I have never seen that one.
There were a couple of versions of the JB-2000, ( the 10/11 and the one that had a band switch), one had a driver tube, one did not.
They were not the cleanest amp in the world by any means as far as RF output, but the smaller models made the Meter Tweaker`s grin with the swing swing swing.
73
Jeff