Welcome to MDB Ventures
Collector Tubes Store


MDB Ventures Home


Don't forget to visit our
Discount Bargain Packs
and
Bargain Bin
for more savings!


                                                                                                                                                                                                                                                   


Don't see what you need? Contact us. We have many more tubes that are not yet listed. We also have new and good used tubes in most other numbers including preoctal, globe/balloon, octal, loctal, miniature, subminiature, metal, power, transmitter tubes and many more.

MDB Ventures Collector Tubes
Qty
Avail
Tube
Type
Price
Each
Tube
Brand
Emission
Strength
Mutual
Conduct

Desc

Notes
1 ATP4 / ZA5502 / CV1366 $15.00 Valves Electronic untested heater ok used (ST) loose base - dual silver plates
1 CV136 $5.00 unknown untested --- unknown (wb) ---
1 CV138 / 6AM8 $5.00 Valve Electronic untested --- NOS (OB) ---
1 CV138 / 6AM8 $5.00 Valve Electronic untested --- NOS (OB) ---
1 CV138 / 6AM8 $5.00 Valve Electronic untested --- NOS (OB) ---
1 CV138 / 6AM8 $5.00 Valve Electronic untested --- NOS (OB) ---
1 CV140 $3.00 Valve Electronic untested --- NOS (OB) ---
1 CV140 $3.00 Valve Electronic untested --- NOS (OB) ---
1 CV140 $3.00 Valve Electronic untested --- NOS (OB) ---
1 CV140 $3.00 Valve Electronic untested --- NOS (OB) ---
1 CV140 $1.50 Valve Electronic untested --- NOS (ob) water damaged box
1 CV1376 $5.00 Valve Electronic untested --- NOS (OB) 9pin mini
1 CV1376 $5.00 Valve Electronic untested --- NOS (OB) 9pin mini
1 CV1635 $5.00 Valve Electronic untested --- NOS (OB) 9pin mini
1 CV2007 $4.00 unknown untested --- NOS (L) 9pin mini - waffer with solder tails welded to pins
1 CV2010 $5.00 Valve Electronic untested --- NOS (OB) 7pin mini - waffer with solder tails welded to pins
1 CV2015 $10.00 unknown untested --- NOS (OB) 9pin mini - waffer with solder tails welded to pins
1 CV2015 $10.00 unknown untested --- NOS (OB) 9pin mini - waffer with solder tails welded to pins
1 CV2015 $10.00 unknown untested --- NOS (OB) 9pin mini - waffer with solder tails welded to pins
1 CV2015 $10.00 unknown untested --- NOS (OB) 9pin mini - waffer with solder tails welded to pins
1 CV2019 / CV287 $5.00 Valve Electronic untested --- NOS (OB) 7pin mini - waffer with solder tails welded to pins
1 CV2019 / CV287 $5.00 Valve Electronic untested --- NOS (wb) 7pin mini - waffer with solder tails welded to pins
1 CV2019 / CV287 $5.00 Valve Electronic untested --- NOS (wb) 7pin mini - waffer with solder tails welded to pins
1 CV2031 $5.00 Valve Electronic untested --- NOS (OB) 9pin mini - waffer with solder tails welded to pins
1 CV2031 $5.00 Valve Electronic untested --- NOS (OB) 9pin mini - waffer with solder tails welded to pins
1 CV2031 $5.00 Valve Electronic untested --- NOS (OB) 9pin mini - waffer with solder tails welded to pins
1 CV2031 $5.00 Valve Electronic untested --- NOS (wb) 9pin mini - waffer with solder tails welded to pins
1 CV2031 $5.00 Valve Electronic untested --- NOS (OB) 9pin mini - waffer with solder tails welded to pins
1 CV2031 $5.00 Valve Electronic untested --- NOS (OB) 9pin mini - waffer with solder tails welded to pins
5 CV2031 $5.00ea Valve Electronicuntested --- NOS (OB) 9pin mini - waffer with solder tails welded to pins
1 CV2127 $5.00 Valve Electronic untested --- NOS (OB) 9pin mini
1 CV2136 $5.00 Valve Electronic untested --- NOS (OB) 9pin mini
1 CV2136 $5.00 Valve Electronic untested --- NOS (OB) 9pin mini
1 CV2194 $5.00 Zaerix / STC untested --- NOS (OB) 7pin mini - England
1 CV2194 $5.00 Zaerix / STC untested --- NOS (OB) 7pin mini - England
1 CV2241 $5.00 Chelmer Valve untested --- NOS (OB) subminiature tube - wire tails
1 CV2459 / SCI-800 $5.00 GEC untested --- NOS (OB) ---
1 CV2460-SCI / 1000 $4.00 GEC untested --- NOS (OB) box flap missing - Ser no. 109
1 CV4014 $5.00 Valve Electronic untested --- NOS (wb) 7pin mini - waffer with solder tails welded to pins
1 CV4055 $5.00 Valve Electronic untested --- used (OB) 9pin mini
1 CV5060 $5.00 Pinnacle untested --- NOS (OB) 9pin mini
1 DAF41 $7.50 Philips untested --- NOS (OB) 8pin mini - glass base
1 DAF96 $2.50 Amperex untested --- NOS (OB) 7pin mini
1 DF97 $5.00 Amperex untested --- NOS (OB) 7pin mini - bugle boy - torn box flap
1 EAF42 $8.00 Telefunken untested --- used (wb) 8pin mini - glass base (6CT7)
1 EAF42 $8.00 Mullard untested --- used (wb) 8pin mini - glass base (6CT7)
1 EB41 $5.00 Valvo untested --- used (L) 8pin mini - glass base
1 EBC41 $5.00 Valvo untested --- NOS (wb) 8pin mini - glass base
1 EBC41 / 6CV7 $5.00 Amperex untested --- NOS (OB) 8pin mini - glass base
1 EBC81 / 6BD7 $2.50 Telefunken 40dmc diodes: 90% / 100% --- used weak (wb) 9pin mini
1 EBF83 $2.50 Amperex untested --- NOS (OB) 9pin mini
1 ECH42 / 6CU7 $5.00 Valvo untested --- NOS (OB) 8pin mini - glass base
1 ECL11 $25.00 Siemens / Rohren untested --- NOS (OB) (ST) in original German box (cat:Col-1c)
1 ECL11 $25.00 Siemens / Rohren untested --- NOS (OB) (ST) in original German box - damaged box (cat:Col-1c)
1 ECL11 $25.00 Siemens / Rohren untested --- NOS (OB) (ST) in original German box - damaged box (cat:Col-1c)
1 ECL83 $10.00 Amperex untested --- NOS (OB) 8pin mini - bugle boy
1 ECL83 $10.00 Amperex untested --- NOS (OB) 8pin mini - bugle boy
1 ECL83 $10.00 Amperex untested --- NOS (OB) 8pin mini - bugle boy
1 EF40 $7.50 Amperex untested --- NOS (OB) 8pin mini - glass base
1 EF40 $7.50 Amperex untested --- NOS (OB) 8pin mini - glass base
1 EF41 $7.50 Siemens untested --- NOS (OB) 8pin mini - glass base
1 6CJ5 / EF41 $7.50 Amperex untested --- used (OB) 8pin mini - glass base
1 6CJ5 / EF41 $4.00 Valvo untested --- used (wb) 8pin mini - glass base
1 6CJ5 / EF41 $4.00 Valvo untested --- used (wb) 8pin mini - glass base
1 6CJ5 / EF41 $4.00 Valvo untested --- used (wb) 8pin mini - glass base
1 6CJ5 / EF41 $5.00 Telefunken untested --- used (wb) 8pin mini - glass base
1 6CJ5 / EF41 $5.00 Telefunken untested --- used (wb) 8pin mini - glass base
1 6CJ5 / EF41 $5.00 Telefunken untested --- used (wb) 8pin mini - glass base
1 EF42 $7.50 Valvo untested --- NOS (OB) 8pin mini - glass base
1 EF42 $7.50 Mullard untested --- NOS (OB) 8pin mini - glass base
1 EF37A $5.00 BVA untested --- used (wb) (GT) paint shield flaking off
1 EF80 $10.00 Mullard untested --- used (wb) Bentley Valve label - includes paper slip 'Bentley Acoustic Corporation'
1 EF80 $10.00 Telefunken untested --- NOS (OB) ---
1 EF85 $4.00 unknown untested --- unknown (wb) obscured marking on tube
1 EF91 $10.00 Amperex untested --- NOS (OB) 7 pin mini - bugle boy
1 EF91 $5.00 Mullard untested --- used (rb) 7 pin mini
1 EF94 $5.00 Valvo by Amperex untested --- NOS (OB) 7pin mini
1 EF98 $2.50 Amperex untested --- NOS (OB) 7pin mini - bugle boy
1 EL41 $7.50 Telefunken untested --- NOS (OB) 8pin mini - glass base
1 6CK5 / EL41 $7.50 Amperex untested --- NOS (OB) 8pin mini - glass base
1 EL91 $10.00 Bentley Valve Corporation untested --- unknown (wb) ---
1 EY86 $2.00 Mullard untested --- used (rb) 9pin miniature
1 FM-1000 $10.00 Natioanl Union untested --- NOS (OB) loktal - damaged box
6 HS $5.00ea Conant Laboratories untested --- NOS (OB) copper oxide instrument rectifier
4 M8142 $4.00ea Mullard untested --- NOS (OB) 7pin miniature - wire tails
1 P61 $20.00 Mazda untested heater ok used (short ST) paint shield
1 PCF80 $10.00 Bentley Accoustic Corporation untested --- NOS (OB) ---
1 QS1222 / 800 $10.00 English Electric Valve untested --- NOS (OB) ---
1 QS1222 / 1400 $10.00 English Electric Valve untested --- NOS (OB) ---
1 TH41* $10.00 Ediswan / Mazda untested --- used (OB) octal base - paint shield - Vallance & Davidson label
1 VU11-10E / 146 $5.00 Marconi dead no heater used (L) display only - four pin euro base
1 VU120A-10E / 807 $15.00 unknown untested heater ok used (L) glass arbors - four pin euro base + cap - smooth silver plate (cat:Col-1c)
1 VU134-10E / 100B $15.00 unknown untested heater ok used (rb) glass arbors - four pin euro base - smooth silver plate
1 X-155 $5.00 Philco untested --- NOS (OB) ---
2 X-6090 $20.00 Sylvania untested --- NOS (OB) Thermalcouple?
1 YL1130 $20.00 Mullard untested --- NOS (wb) gold pins
1 Z2300 $50.00 GE untested Engineering Samples NOS (OB) Includes curve trace document with pinout (click on link for more info) - These are three tubes being sold as a set
1 unknown rectifier $7.50 unknown (british - bva?) untested heater ok used (L) (ST) ribbed square plate - 4pin euro base with cap

Notes:
(OB) = original box, (rb) = relabeled/replacement box, (wb) = white box, (L) = loose (no box), (pl) = paper label on tube (original or third party)
(H) = tested on Hickok 539A
(ST)=ST Style, (GT)=GT Style, (TT)=Tall Tubular, (M7)=7pin miniature, M9=9pin miniature, (SM)=subminiature, JAN = Military
Emission Strength = Percentage of emission measured on Eico 666 tube tester
(Emission Strength = 100% baseline reference, >80%:good, >60%:fair >40%=diode good).
Gm = Mutual conductance measured on Hickok 533 tube tester; Except (H)=tested on Hickok 539A
(Gm = measured/baseline, measured1:measured2/baseline, measured1:measured2/baseline1:baseline2).


How To Order:

Purchasing our Collector tubes is easy.
Just send us an email indicating the tubes (including quantities) you want.
We will let you know the total price including shipping and handling.

Shipping and Handling Information

Contact MDB Ventures
sales@mdbventures.com
or
sales@fourwater.com

Due to the highly volatile nature of the tube business, all Prices are subject to change without notice.


Go back to the TOP

Don't forget to visit our
Discount Bargain Packs
and
Bargain Bin
for more savings!


Gmail Users
Please read this note about incorrectly declared email as spam.
This can be an issue as well with other free email providers like Hotmail, AOL, and Yahoo.


MDB Ventures Home

Contact MDB Ventures
sales@mdbventures.com
or
sales@fourwater.com