Wide-panel tweed Bassman, the step between the TV-front box and the narrow-panel 4x10.
Marks that can be entered for this maker: Serial number (plate), Tube chart sticker, Transformer code, Speaker code, Pot code, Chassis stamp, Circuit code.
Nothing predates 1952; components only push the date later.
Sold-price aggregates are not collected yet, so the archive gives no figure — condition, originality of the transformers and a documented recap move this model more than any list price.
Evidence: Blue Book of Guitar Values — fender · Internet Archive (Wayback Machine) — snapshot of www.ampwares.com