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(!!!!) (BEST PAIR #1) EL37 Mullard UK branded Amperex gray plates used/strong 1968 (78ma and 76ma)

(!!!!) (BEST PAIR #1) EL37 Mullard UK branded Amperex gray plates used/strong 1968 (78ma and 76ma)

$ 299.99
(!!!!) (BEST PAIR #2) EL37 Mullard UK branded Amperex gray plates used/good 1968 (73.5ma and 72ma)

(!!!!) (BEST PAIR #2) EL37 Mullard UK branded Amperex gray plates used/good 1968 (73.5ma and 72ma)

$ 279.99
EL37 Mullard UK black plate used/75% 1958 (71ma)

EL37 Mullard UK black plate used/75% 1958 (71ma)

$ 129.99
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