CV5377 EF91 MULLARD Special Quality Valve Tube
Mullard KQDD/K CV4014 EF91 6AM6 Valves Tubes x 10
5x NOS CV753 Valves – Military Spec EF91 / 6AM6 – Unused Vintage Stock
B7G PCB BRITISH VALVE TUBE BASE (PACK OF 2PCS) - EF91/6AK5/EL91 ETC
7Pin Socket Saver 5654W 6AQ5 6X4 6Z4 6AU6 6J1 6J2 6J3 6J4 6J5 6K5 EF95 EZ90 EF91
Mullard - Data Sheets - Opto-Electronic Semiconductor Devices
Mullard - Technical Handbook - Book 1 - Semiconductor Devices - Part 1a 1985
