MDB Ventures Preoctal Radio Vacuum Tubes


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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/loktal, miniature, subminature, metal, power, transmitter tubes and many more.

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

Desc

Notes
1 45 $80.00 RCA Victor 110% 2000 / 1650Gm ST - used (wb) ---
1 45 $35.00 Raytheon 80% 1250 / 1850Gm ST - Used Good ---
1 45 $25.00 Sylvania 70% 1100 / 1850Gm ST - Used fair (L) ---
1 47 $15.00 Tung-Sol 80% 2200 / 2000Gm ST - used (L) ribbed black plate - no coat
1 47 $15.00 Philco 80% 2150 / 2000Gm ST - used (L) engraved base - ribbed black plate - no coat
1 47 $15.00 National Union 85% 1700 / 2000Gm ST - used (L) ribbed black plate - no coat
1 53 $12.00 National Union 140% / 130% 1900: 1800 / 1500Gm ST - NOS (OB) engraved base
1 53 $12.00 National Union 110% / 115% 1550: 1650 / 1500Gm ST - NOS (wb) engraved base
1 53 $12.00 National Union 110% / 110% 1600: 1600 / 1500Gm ST - NOS (wb) engraved base
1 53 $12.00 National Union 130% / 120% 1800: 1600 / 1500Gm ST - NOS (wb) engraved base
1 53 $12.00 Philco 120% / 120% 1700: 1800 / 1500Gm ST - NOS (wb) engraved base
1 53 $12.00 Majestic 110% / 120% 1500: 1500 / 1500Gm ST - NOS (OB) engraved base - damaged box
1 53 $12.00 Majestic 110% / 115% 1550: 1550 / 1500Gm ST - NOS (OB) engraved base - damaged box
1 53 $12.00 Majestic 110% / 130% 1500: 1550 / 1500Gm ST - NOS (OB) engraved base - deteriorating box
1 53 $12.00 Majestic 100% / 130% 1500: 1650 / 1500Gm ST - NOS (OB) engraved base - damaged box
1 53 $10.00 RCA 120% / 120% 2000: 2000 / 1500Gm ST - NOS (OB) ---
1 53 $10.00 RCA 130% / 130% 1950: 1950 / 1500Gm ST - NOS (OB) ---
1 53 $10.00 RCA 130% / 120% 1900: 1750 / 1500Gm ST - NOS (OB) box damaged
1 53 $10.00 RCA 120% / 130% 2150: 2500 / 1500Gm ST - NOS (wb) ---
1 53 $10.00 RCA Victor 130% / 130% 1700: 1800 / 1500Gm ST - NOS (OB) deteriorating box - cat:312-65
1 53 $10.00 National Union 125% / 130% 1900: 2000 / 1500Gm ST - NOS (OB) ---
1 53 $10.00 National Union 100% / 100% 1600: 1800 / 1500Gm ST - NOS (OB) ---
1 53 $10.00 Aristocrat 110% / 120% 1800: 2000 / 1500Gm ST - NOS (OB) box damaged
1 53 $10.00 Sylvania 140% / 140% 2000: 2000 / 1500Gm ST - NOS (OB) damaged box - cat:401-437
1 53 $10.00 Sylvania 120% / 130% 1850: 1900 / 1500Gm ST - NOS (wb) engraved base
1 53 $10.00 Sylvania 110% / 110% 1800: 1900 / 1500Gm ST - NOS (wb) ---
1 53 $10.00 Sylvania 130% / 130% 1600: 1750 / 1500Gm ST - NOS (wb) ---
1 53 $10.00 Philco 130% / 140% 1800: 1900 / 1500Gm ST - NOS (ob) damaged box
1 53 $10.00 Philco 120% / 120% 2000: 2000 / 1500Gm ST - NOS (OB) damaged box
1 53 $10.00 Tung-Sol 140% / 140% 2100: 2200 / 1500Gm ST - NOS (OB) ---
1 53 $10.00 Triad untested heater ok ST - NOS (OB) sealed in box - damaged box - cat:405-28
1 53 $6.00 Philco 125% / 125% 1400: 1500 / 1500Gm ST - used (rb) engraved base
1 53 $6.00 Philco 100% / 110% 1700: 1750 / 1500Gm ST - used (rb) engraved base (pl)
1 53 $6.00 RCA / Cunningham 100% / 110% 1650: 1700 / 1500Gm ST - used (rb) engraved base
1 53 $6.00 RCA / Cunningham 120% / 125% 1250: 1300 / 1500Gm ST - used (L) engraved base
1 53 $6.00 Philco 120% / 120% 1300: 1300 / 1500Gm ST - used (L) engraved base
1 53 $6.00 National Union 120% / 120% 1300: 1400 / 1500Gm ST - used (L) engraved base
1 53 $6.00 National Union 140% / 130% 1800: 2000 / 1500Gm ST - used (L) engraved base
1 53 $6.00 Silvertone 140% / 140% 1300: 1450 / 1500Gm ST - used (L) engraved base
1 53 $5.00 RCA Radiotron 120% / 120% 1550: 1550 / 1500Gm ST - used (L) ---
1 53 $5.00 RCA 100% / 110% 1700: 1900 / 1500Gm ST - used (rb) ---
1 53 $5.00 RCA 100% / 110% 1750: 1900 / 1500Gm ST - used (wb) ---
1 53 $4.00 National Union 90% / 110% 1550: 1600 / 1500Gm ST - used (L) engraved base
1 53 $3.00 Philco 85% / 90% 1450: 1550 / 1500Gm ST - used (L) engraved base
1 53 $2.00 Philco 75% / 85% 900: 1000 / 1500Gm ST - used (ob) damaged box
1 59 $25.00 Raytheon 120% 2450 / 2000Gm ST - used (ob) oval plate - engraved base - four pillar tube - deteriorating box (pl)
1 59 $25.00 RCA Radiotron 120% 2400 / 2000Gm ST - NOS (wb) square plate - engraved base
1 59 $20.00 Raytheon 110% 2400 / 2000Gm ST - NOS (wb) square plate
1 59 $20.00 RCA 120% 2100 / 2000Gm ST - NOS (wb) square plate
1 59 $20.00 Philco 120% 2500 / 2000Gm ST - NOS (wb) square plate
1 59 $20.00 National Union 130% 2500 / 2000Gm ST - NOS (OB) square plate - damaged box
1 59 $12.00 Tung-Sol 110% 2250 / 2000Gm ST - used (wb) engraved base - square plate
1 59 $12.00 Zenith 100% 2000 / 2000Gm ST - used (L) engraved base - square plate (pl)
1 59 $10.00 Sylvania 110% 2450 / 2000Gm ST - used (rb) square plate
1 59 $7.50 Arcturus 90% 2100 / 2000Gm ST - used (rb) round plate - damaged box
1 59 $7.50 Zenith 90% 2050 / 2000Gm ST - used (rb) engraved base - square plate - damaged box
1 59 $7.50 National Union 90% 1700 / 2000Gm ST - used (wb) square plate
1 59 $7.50 RCA 90% 1600 / 2000Gm ST - used (wb) square plate

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, 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 preoctal 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.


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