Hi all! Though I'd share something that fell into my lap and ask a question. Sorry about the crappy pics! A Valco Oahu amp, serial X57(xx), I believe that makes it a '57. This came to me from a relative today, really excited to get it home: very cool old school 'powered' magnet speaker, two old glass 6v6 tubes (RCA and Sylvania) and an old RCA 5Y3 rectifier (?) pretty psyched to give it a whirl, even without a three prong. Threw the power switch... nothing. Checked the fuse... none there! I can try the glass in my Microbaby in the interim, but anyone know what kind of fuse to toss in? Anyone have any info on these? Thanks!