one Philips 12AX7 ECC83 green label, code mC1, close matched, NIB & NOS tube | eBay
ECC83 Ecc-83 philips 12ax7 electron tube ELECTRON TUBES
Miniwatt ECC83 | Philips AG9015
PHILIPS ECC83/12AX7 TUBES PAIR NOS NIB | #150265222
Tube Classics - Philips Audio Tubes
Set of 2 used tubes 1959-61 Mullard ECC83 12AX7 Philips Miniwatt Label Halo Getter. Rev. I61with (B) Blackburn Plant Etched Date codes. Made in Gt. Britain.