Hi Jimbo ,
Well , I’ve rolled the dice and purchased my first ever NOS tubes . I purchased 2 matched 1960 NOS RCA black plate 12bh7a tubes to replace the 2 stock JJ ECC99 tubes in my new RSLS . The dealer seems reputable but time will tell . I haven’t received the NOS yet , but in the meantime my RSLS actually sounds awesome with the Croft supplied stock JJ’s. Glenn Croft is some kind of magician .
Best ,
Drew