6550/KT88

NOS Mullard MO Valve KT88 (Single and Matched Pair) Gold Lion, Genelex, GEC

$310.00
Price: $310.00
Select Matched Pair for amps that use 2 of these tubes and Matched Quartet for amps that use 4
Taxonomy upgrade extras: 

Labeled and boxed as Mullard, but these are IDENTICAL to Gold Lions, Genelex, GEC, etc, which are merely brand names these were sold under in different markets. Black plates.

NOS GE 6550A

$120.00
Price: $120.00
Select Matched Pair for amps that use 2 of these tubes and Matched Quartet for amps that use 4
Taxonomy upgrade extras: 

ca 1970 with crimped, not welded, plates. NOS in original white boxes. Some of the original boxes dry rotted and discarded. Tubes are in pristine condition. One matched pair with one tube in original box and one in white box.

NOS Tung Sol 6550

$250.00
Price: $250.00
Select Matched Pair for amps that use 2 of these tubes and Matched Quartet for amps that use 4
Taxonomy upgrade extras: 

NOS in good original boxes and matching date codes 322KR3. Gray plates.