TRIODES & PENTODES B4 B5 BASED FROM 1920'S & 1930'S

1561, PHILIPS, ST GOLD TOP ENVELOPE, 4 RIB PLATE, BLACK BASE, RGN2004, 4655, DW4/350, PV4200, 75301, DW4, VG3512, FW125, WE52 , VG3016, R4200, G4200, G2004

1821, PHILIPS, GLOBE ENVELOPE, 4 RIB PLATE, BROWN BASE, CV1443, UU5, MU14, U10

1V, Radiotron, 6Z3, CV1999

210RC, MAZDA, BALLOON ENVELOPE, TRIODE, H2, H210

220HPT. COSSOR. BATTERY AUDIO OUTPUT PENTODE, KT2 EQUIVALENT

220HPT. COSSOR. BATTERY AUDIO OUTPUT PENTODE, GLOBE ENVELOPE, KT2 EQUIVALENT

220P, Cossor, Globe Envelope, CV1020, P2, PM2, VT20

220P/A, 220PA, Cossor, CV1022, K30G, L2, LP2, LP2, P220, PB1, PM2A, VR22,

227, Super Airline, Globe, UY227, MESH ANODE, Mesh Plate, 27,

230XP, COSSOR, SUPER POWER, TRIODE, BOXED, CV1023 ,VT23

24A, CUNNINGHAM, MESH ANODE, ENGRAVED BASE

24A, RCA, , MESH ANODE, ENGRAVED BASE

24A, SYLVANIA, SY-224, MESH ANODE, ENGRAVED BASE

41MP, COSSOR, BALLOON ENVELOPE, TRIODE, ML4, PA1, 41FP, AC/P, 104V, TT4, LF4, 41MXP, AC/P1, 054, CV1689, CV1161, CV1458,

46, CUNNINGHAM, RCA RADIOTRON, GLOBE ENVELOPE

46, SYLVANIA

71A BALLOON ENVELOPE TRIODE BY TRAIL BLAZER = UX171A = CX371A = CX71A = UX-71A = ER71A = ER171A = AC4 = X-171A = 471A = T71A = MX171A = 171A = 171AC = SX171A

AC/HL, MAZDA, , GLOBE ENVELOPE, MH4, VR37, TESTED,

AC/P, MAZDA, BALLOON ENVELOPE, TRIODE, WITH BBC MARKINGS 41MP, ML4, PA1, 41FP, AC/P, 104V, TT4, LF4, 41MXP, AC/P1, 054, CV1689, CV1161, CV1458,

AC/Pen, Mazda, Globe Envelope, 7 pin, 7A2, A70B, APP4A, CV1174, KT42, MKT4/7, MP/Pen, N40, Pen4VA

AC042, MULLARD, P2, PA20, S30D

ACFC4, 362 RADIO VALVE, MX40, BOXED, NOS, 1935,

ACP1, AC/P1, MAZDA, LOW EMISSION BUT WITH BBC LABELS DATED 1936, FOR DISPLAY ONLY

AD/P4, ADMIRALTY TRIODE, NR94

AMPLION, AML 2/50, RED PRINT, PIP-TOP, 1927, FILAMENT OK,

AR17, MIL SPEC, MH4, MARCONI OSRAM, TRIODE, WARTIME PRODUCTION, 1MTL, AC/HL, CV399, CV1037, D4, HL4, MH4K, NR31, VR37

AZ12 , RATRON , B4 BASE, GLOBE ENVELOPE