This is a vintage Knight-Kit Span Master regenerative shortwave receiver, model Y-258, produced by Allied Radio.
Key specifications and features:
It is a two-tube set (plus selenium rectifier), first appearing in a September 1958 advertisement.
The receiver covers multiple frequency ranges, including 0.54-1.6 MHz (Broadcast Band), 1.7-4.5 MHz, 4.8-14 MHz, and 13.5-30 MHz (Shortwave Bands).
It was available as a kit for home assembly, and many enthusiasts built it as their first shortwave radio.
Features include a 4-inch speaker, an S-meter, and a fine regeneration control for tuning continuous wave (CW) and single-sideband (SSB) signals.
* I prefer pickup or delivery local to the Binghamton area *