The revival-era 25L15: Crooks built the working prototype and the amp debuted at the January 1998 NAMM show, held back from production until the 15 in. speaker could be replicated.
Marks that can be entered for this maker: Transformer code.
Nothing predates 1998; 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: Vintage Guitar magazine · Standel — maker history