6本はマランツ7オリジナルに使用していた品です5本は51046のプリントがあり、1本はプリントが消えてダイヤマークがあります もう1本は新品未使用です53052のプリントがあります 7本セットです

Telefunken ECC83 / 12AX7 Smooth Plate | TubeDepot.com

Telefunken ECC83-TK (12AU7) Vacuum Tube | SX Pro - SX Pro Audio

ECC83 Telefunken 12AX7 | TUBES.RS | The finest NOS tubes & Tube amps

TELEFUNKEN ECC83

Telefunken ECC83/12AX7 #2 Dual Triode Tube Vintage Rare | eBay

Telefunken ECC83 12AX7 Ribbed Plates Matched Pair - Berlin 1959 Same Code - NOS | Soundlumia

Telefunken Diamond ECC83 / 12AX7 Smooth Platinum Low Noise Tube

File:Vintage Telefunken 12AX7 (ECC83) Vacuum Tubes, Made In Western Germany (15822838905).jpg - Wikimedia Commons

ECC83 TELEFUNKEN 12AX7 VALVE DOUBLE TRIODE AUDIO BALANCED 100% OK

Tube Classics

RARE TELEFUNKEN ◇ "SELECT" ECC83 12AX7 SMOOTH PLATE YELLOW TIP VACUUM TUBE #33 | eBay

35KB"],"2001":[null,null,null,null,null,null,null,1],"2003":[null,"yRmr1kkcKHICoM

TELEFUNKEN Black Diamond ECC83-TK Vacuum Tube Matched Quad

Telefunken ECC83 12AX7 NOS

ECC83 Telefunken, looks & tests NOS, Early: may 1960 (V302)