Rare and priced accordingly a matched pair of vintage MULLARD fx1 tubes manufactured 1959 at the Blackburn plant UK.Fat brown base,double 0 top halo getters.Both tubes meet or exceed NOS values of 11,000.Have moved to a 300B based amp and no longer require these.
Offered at $375 for the pair shipping included,and I would invite you to check my Audiogon feedback under my member name.
