Some extra tubes I have for sale:

Sylvania JHS 6X4 white boxes pair - $13 shipped
Sylvania OA3 original boxes - $11 shipped
RT Mazda 6X4 gray plate D-getter NIB NOS - $35 shipped
RT Mazda NIB NOS 6V6GT NOS pair - $125 shipped

CIFTE 3mica double getter support from late 50's CRYO'd - $110 shipped
Mazda France wide gray ribbed plate double getter support (halo) - $80 shipped

Plenty of 6V6 (RCA, TS, Sylv.), 12AU7, 5963, and 5814 pairs - will post more info.

I have about 1000 tubes so some have to go.

0C2 seem somewhat hard to find actually. I have only two pairs. The GE (Italy) w/ "Mullard" seams on top that came with the amp, and a pair of Westinghouse.

I may have a pair of E80CC gold-pin Amperex for sale they are matched and test at 88/100 100/88 (expressed as a % of spec.). Steve emailed and okay-ed these for use and I swear, though only after one day and a short session, I noticed an immediate and dramatic increase in midrange warmth and presence which one might attribute to the E80CC being more linear and running at double the filament current.

best
j