65W 2x15 solid-state-era Gibson amp (1970-1974).
Marks that can be entered for this maker: Transformer code, Speaker code, Pot code.
Nothing predates 1970; 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 — gibson