Despite collecting old semiconductors for more than 40 years, there are are still many early devices that I want - mostly transistors from the 1950's and integrated circuits from the early 1960's. Below I have attempted to summarise the key ones, but there are others, so if you have vintage devices, please

Condition is not important - used examples are fine. I especially like examples on circuit cards.

UK Types:
Mullard branded OA50, OA51, OA53, OA56, OA60, OA74, OAZ208, OC15, OC50, CXT1, CXT2, BCY10-BCY12, BCZ10, BCZ12, BCZ13
GEC branded any EW series device, GET9, GET10, GET693, GET672, GET673, GET693, GET931, ST721-ST723, S2, S4, GEX00, GEX33, GEX36, GEX37, GEX54/3, GEX54/4, GEX58
STC(UK) TP1, TP2, any LS type e.g. LS736, LS737, LS828, LS830, TS9, R50A and R50B, ACY29, ACY32, ACY33, ACY35, ADY23, ASY53, ASY59, ASY61, ASY62, ASY65, any 2X/ diode, GD11 GD15 and GD16 diodes, any CK series IC
BTH or AEI any JT or JTX type, JT1A, JT2A, JT3A, GT40B, GT42B, GT44B, GT47, any STX5 transistor, diodes CG3-E, CG5-M, CG6-M, CG7-C, CG8-C, CG8-M, CS1, CS2-A, CS3-A, CS4, CS5
Ediswan XA121 to XA126, XB114, XC111, XS111, XC155, XC156, XC171, XC703, XC713, XC723, XA141, XC723, XD901 diode
Newmarket V6/R3, V6/R4, V6/2RC, V6/4RC, V6/8RC, V10/15AC, V10/30AC, V10/50AC, V10/1SC, V10/2SC, NKT406, NKT415, NKT416, NKT420, NKT501 to NKT504, any MC-series microcircuit, PC10 circuit board
Hivac XFT1
English Electric any transistor eg VB701, VB704
military CV types CV164, CV166, CV1353, CV1354, CV2310, CV5309, CV5322, CV5327, CV5330, CV5353, CV5791, CV5851, CV7011, CV7012, CV7081, CV7116, CV7118, CV8004, CV8124, CV8276, CV8349, CV8386, CV8582
PO types PO1, PO2, any CXT type eg CXT1, CXT2
Ferranti any MicroNor and MicroLin ICs in the CN, ZSS, ZST and ZSP series
Semiconductors/Plessey SB129, SB087, any SPC transistor, any diode, any bubble memory module or board, any SL2n IC
Lucas DT4110 to DT4112, DT4120, DT4121, 49914A, 49935A
Texas Instruments (UK) 3S001, 3S002, 3S003
Thorn/Brimar/Mazda AD140, ASY85, ASY86, ASY87, ASY88
Impex S31T
Associated Transistors AT/AF1, AT/AF2, AT/RF1, AT/RF2, AT/S11, AT/S12, AT/S13
Westinghouse Brake & Signal Co. WG5A, WG6A, WG7A, WG7C, WG7D diodes, Westector rectifiers

Types from other countries (except USA, see below):
Australia any transistors or diodes by STC or Philips marked as made in Australia, any transistors by AWA/AWV, Ducon or Anodeon.
Czechoslovakia - Tesla any transistor xNT40, xNU40 or 1NU70 to 3NU70, any diode xNN40 or xNN41
France - LCT 3604, 3609, 3698, 3768 etc
France - CF Thomson-Houston TH8501, THP35, THP44, THP45, THP50 to THP52, THP60, THP61
1T3, 2T3, 3T3, 4T3, 10T2, 11T2, 12T2, 17T1, 18T1, 25T1, 26T1
France - CSF/COSEM TJN1, TJN2, TJN1A, TJN2A, TJN100, types A-F, TJN6, TJN7, TJN30, TJN300
SFT101 to SFT105, SFT112, SFT113
France - La Radiotechnique OC15, OC70, OC71, OC72 (not Philips/Mullard examples)
France - Sagem The MBS2256 bubble memory module
France - Westinghouse any transistron
Germany - AEG OD650, OD651, OD651a, OD652, OD750, OD751
Germany - Intermetall GSN1 - GSN6, GT1, GT2, X-125, X-122, X-120, OC32 to OC34, OC24 (not Philips/Mullard), OC301, OC302, OC318, OC330, OC410, AF111, any GES diode, any M series diode
Germany - Rost GT 10, GT 20, GT 30, GTA1 to GTA3, GTE1, GTE2, GTL1, GTL3, GTV, HF100, HF200
Germany - SAF VS200, VS201, VS202, VS220, VS221, OC110, OC120, OC130
Germany - Siemens AD104, TS13, TS33, TF70, TF71, TF77, TF85, TF251, TF252, TF260
Germany - TeKaDe any K series diode, any 4000 or 7000 series transistor, GST01, GST02, GFT20, GFT21, GFT2006
Germany - Telefunken ACZ10, AFZ10, ASZ10, AUZ11D, OA159, OA173, OC601 (oval), OC602 (oval), OC611, OC622, OC623, OC6016, OD605, OD650, OD651, OD651a, OD652, OD750, OD751
Germany - Valvo ASY31, OA72, OA74, OC10, OC11, OC12, OC15, OC46, OC50, OC51, OC80A, 100.OC
Hungary - Tungsram P6, 2-P6, P6T, P13, P14, P15, P13T, P13BT, P14T, P15T, 2-P6T, any GD series diode, OA1182 and OA1182D with decal
Italy - Microfarad / Mistral MFT108, MFT121, MFT122, MFT123, MFT151, MFT152, MFT153
Italy - SGS 2G109, 2G138
Switzerland - Ebauches any ES type e.g. ES3110, ES3501
Japan - Fujitsu any FT type, 2SB12, 2SB13, 2SB14, 2SB20, 2SB21, the FBM64DA bubble memory module
Japan - Hitachi any HJ type, 2SA13, 2SA14, 2SA16
Japan - Mitsubishi TJ35, TJ36, VB
Japan - National any MA type, any MCP type, any OC type, 2SB70, 2SB92, 2SC50
Japan - NEC any ST type, any bubble memory module or board
Japan - Sony T1698 etc, 2T01 to 2T99, 3T201 to 3T203
Japan - TEN 2NJ4, 2NJ9, 2NJ10
Japan - Toshiba TS12 - TS22
The Netherlands - Philips OC10, OC11, OC12, OC13, OC14, OC15, OC50, OC51
The Netherlands - Van der Heem OC1G to OC1L, OC1LR, OC1LP, the same suffixes for OC2 to OC6, OC222
GDR/DDR - WBN/HWF/IHT/WF any 1NC-, 2NC-, or 3NC- transistor, any early diode eg DD, GDT, MDnnn, RDnnn e.g. RD120, OA500, OA513 etc
OC812, any OC81n type marked WBN, LC810, LC815, LC824, LD830, LD835, LF880, LF881, LA25, LA50, LA100, LA1, LA4, LA30
OC87n series types in painted TO-44 cans (eg red), OA601, OA602, OA603, OA605, ZL910
Poland TP1 to TP3 from IPPT PAN, TZG1 to TZG6, TZ5 to TZ11, TC11 to TC15, TEWA types TG1, TG2, TG3AS, TG3F, TG6, TG20, TG21, TG37, TG38, TG41, TG50, TG53, TG60, TG61
The USSR transistors KC1 to KC8, C1, C2, C3, C4, C5, КСВ1, КСВ2 etc., П1Д, П1И, МП4, П6Б, П7, large П8, oval П12, П18, П19, П21 to П24, П26 (all suffixes), П27 (all suffixes), П31 to П42 (all suffixes), П207 (all suffixes), П208 (all suffixes), П406 and П407 oval shape, П408, П409, П412, П413, П414 tophats
diodes any DG type or D type in green body
the K1602RC1, K1602RC5 and K1602RC9 bubble memory modules (any suffix)

US Types:
Amperex OC50, OC51, OC52, OC53, OC54, OC55, OC56, 2N115
CBS-Hytron PT-2A, PT-2S, 2N36, 2N37, 2N38, 2N80, 2N82, 2N108, 2N116
Detectron DCT4, DCT5, DCT6, DCT7, DCT8
General Electric G11, SX4A, 2N30, 2N31, 2N81, ECLO line ICs p321 to p327
Germanium Products RD2517, RD2520, RD2521, RDX500, 2N97, 2N97A, 2N160, 2N161, 2N162, 2N163
Honeywell 3N45, 3N46, 3N47, 3N48
Hydro-Aire A-0, A-1, A-2, A-3, S-0, S-1, S-2
PR Mallory Any transistor e.g., 440, 441, 442
National Union Electric T18A, T18B, 2N39, 2N40, 2N42
Pacific Semiconductors Inc PCG, PCF or PCI series ICs
Philco 2N47, 2N48, 2N62, PL series ICs
Radio Receptor R1698, R1729, R1734
Raytheon CK716
RCA 2N41, 2N46, 2N69, 2N96
Sperry Semiconductor 11S8 line ICs, 10S4 diode array, 300s2 - 302s2 differential amplifiers, 900 series ICs
Sprague Electric 5A, DC6, 2N159
Signetics ICs SE101, SE102, SE120, SE130, SE140, SE200, SE104 or other SE types
Sylvania 3N21
AMELCO/TeleDyne ICs MC100, SA100, SA102
Texas Instruments(USA) SN510, SN511, SN512, SN513, SN515 without suffixes A,B
SN521, SN522 with or without suffixes
SN530, SN531, SN532, SN533, SN534, SN535 without suffixes A,B
transistors 100, 101, 102
Clevite / Transistor Products 2A, 2B, 2C, 2D, 2E, 2G, 2H, 2L, 2N50, 2N51, 2N52, 2N53, CTP1002 to CTP1006 power transistors
Transitron 2N83, 2N84, 2N86, 2N87, 2N89, 2N90, 2N92, any power transistor
Westinghouse Electric Any WX series transistor, 2N54, 2N55, 2N56, 2N58, 2N59, 2N60, 2N61, 2N73, 2N74, 2N75, any WMnnnn ICs
Western Electric 5A, GA52837, GA53080, 3N21
Bubble Memory Modules or cards by IBM, Motorola, Rockwell, Memtech, National Semiconductor, Texas Instruments, or the Intel 7114