The 1950s Standel flagship: 15 in. JBL D-130 speaker, separate bass and treble controls, open-weave "hi-fi" grillecloth — the amp Speedy West, Joe Maphis, Merle Travis and Chet Atkins played.
Marks that can be entered for this maker: Transformer code.
Nothing predates 1953; 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: Standel — maker history · Vintage Guitar magazine