MDB Ventures Preoctal Radio Vacuum Tubes


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Type: 57 ( NOS and Used )

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 57 $18.00 Raytheon 120% 1250 / 1225Gm ST - used (rb) engraved base - four pillar tube - no label
1 NU-57 $10.00 National Union 120% 1350 / 1225Gm ST - NOS (wb) engraved base
1 57-S $10.00 Majestic 150% 2100 / 1225Gm ST - NOS (wb) paint shield
1 57 $8.00 Crosley by Ken-Rad 150% 1750 / 1225Gm ST - NOS (wb) engraved base
1 57 $8.00 Cunningham 130% 1300 / 1225Gm ST - NOS (wb) engraved base
1 57 $8.00 RCA / Cunningham 130% 1400 / 1225Gm ST - NOS (wb) engraved base
1 57 $8.00 RCA / Cunningham 130% 1400 / 1225Gm ST - NOS (wb) engraved base
1 57 $8.00 RCA / Cunningham 130% 1650 / 1225Gm ST - NOS (wb) engraved base
1 57 $8.00 RCA / Cunningham 140% 1500 / 1225Gm ST - NOS (wb) engraved base
1 57 $8.00 RCA Radiotron 150% 1650 / 1225Gm ST - NOS (wb) engraved base
1 57 $8.00 National Union 130% 1350 / 1225Gm ST - NOS (OB) engraved base
1 57 $8.00 National Union 140% 1450 / 1225Gm ST - NOS (OB) engraved base
1 57 $8.00 National Union 140% 1500 / 1225Gm ST - NOS (wb) engraved base
1 57 $8.00 Silvertone 130% 1350 / 1225Gm ST - NOS (wb) engraved base
1 57 $7.50 National Union untested --- ST - NOS (OB) sealed in box
1 57 $7.50 National Union untested --- ST - NOS (OB) sealed in box
1 57 $7.50 National Union untested --- ST - NOS (OB) sealed in box
1 57 $7.50 Raytheon 140% 1650 / 1225Gm ST - NOS (OB) sealed in box
1 57 $7.50 Raytheon 140% 1650 / 1225Gm ST - NOS (OB) sealed in box
1 57 $7.50 Zenith 140% 1600 / 1225Gm ST - NOS (OB) ---
1 57 $7.50 Zenith 140% 1450 / 1225Gm ST - NOS (OB) ---
1 57 $7.50 National Union 140% 1400 / 1225Gm ST - NOS (OB) ---
1 57 $7.50 National Union 130% 1400 / 1225Gm ST - NOS (OB) damaged box
1 57 $7.50 National Union 140% 1500 / 1225Gm ST - NOS (OB) ---
1 57 $7.50 National Union 140% 1500 / 1225Gm ST - NOS (OB) ---
1 57 $7.50 National Union 135% 1450 / 1225Gm ST - NOS (OB) ---
1 57 $7.50 National Union 140% 1500 / 1225Gm ST - NOS (OB) ---
1 57 $7.50 National Union 140% 1450 / 1225Gm ST - NOS (wb) ---
1 57 $7.50 National Union 140% 1600 / 1225Gm ST - NOS (wb) ---
1 57 $7.50 National Union 140% 1550 / 1225Gm ST - NOS (wb) ---
1 57 $7.50 National Union 135% 1400 / 1225Gm ST - NOS (wb) ---
1 57 $7.50 National Union 140% 1450 / 1225Gm ST - NOS (wb) ---
1 57 $7.50 Sylvania 140% 1450 / 1225Gm ST - NOS (wb) ---
1 57 $7.50 Sylvania 130% 1450 / 1225Gm ST - NOS (wb) ---
1 57 $7.50 Sylvania 140% 1550 / 1225Gm ST - NOS (wb) ---
1 57 $7.50 Sylvania 140% 1550 / 1225Gm ST - NOS (wb) ---
1 57 $7.50 Wizard 130% 1450 / 1225Gm ST - NOS (wb) ---
1 57 $7.50 Raytheon 140% 1600 / 1225Gm ST - NOS (wb) ---
1 57 $5.00 Sylvania 130% 1500 / 1225Gm ST - used (rb) engraved base
1 57 $5.00 Philco 120% 1250 / 1225Gm ST - used (rb) engraved base
1 57 $5.00 Zenith 110% 1450 / 1225Gm ST - used (rb) engraved base
1 57 $5.00 Tung-Sol 130% 1450 / 1225Gm ST - used (rb) engraved base - damaged box - gray coat
1 57 $5.00 Ceco 125% 1300 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Cunningham 140% 1450 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Cunningham 130% 1350 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Cunningham 120% 1350 / 1225Gm ST - used (L) engraved base
1 57 $5.00 RCA / Cunningham 130% 1400 / 1225Gm ST - used (L) engraved base
1 57 $5.00 RCA / Cunningham 130% 1450 / 1225Gm ST - used (L) engraved base
1 57 $5.00 RCA / Cunningham 130% 1350 / 1225Gm ST - used (L) engraved base
1 57 $5.00 RCA / Cunningham 110% 1200 / 1225Gm ST - used (L) engraved base
1 57 $5.00 RCA / Cunningham 140% 1350 / 1225Gm ST - used (L) engraved base
1 57 $5.00 RCA / Cunningham 110% 1200 / 1225Gm ST - used (L) engraved base
1 57 $5.00 RCA / Cunningham 130% 1400 / 1225Gm ST - used (L) engraved base
1 57 $5.00 RCA / Cunningham 140% 1450 / 1225Gm ST - used (L) engraved base
1 57 $5.00 RCA Radiotron 140% 1500 / 1225Gm ST - used (L) engraved base
1 57 $5.00 National Union 140% 1450 / 1225Gm ST - used (L) engraved base
1 57 $5.00 National Union 120% 1300 / 1225Gm ST - used (L) engraved base
1 57 $5.00 National Union 140% 1250 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Sylvania 130% 1450 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Sylvania 130% 1350 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Sylvania 120% 1400 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Philco 120% 1200 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Philco 130% 1400 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Tung-Sol 140% 1600 / 1225Gm ST - used (L) engraved base - gray coat
1 57 $5.00 Tung-Sol 140% 1450 / 1225Gm ST - used (L) engraved base - gray coat
1 57 $5.00 Super Airline 130% 1250 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Super Airline 140% 1550 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Ken-Rad 130% 1350 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Ken-Rad 140% 1500 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Ken-Rad 110% 1000 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Ken-Rad 120% 1250 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Wards Super Airline 130% 1400 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Wards Super Airline 125% 1300 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Wards Super Airline 120% 1300 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Silvertone 130% 1350 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Silvertone 125% 1350 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Silvertone 140% 1700 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Silvertone 130% 1250 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Triad 140% 1600 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Triad 120% 1600 / 1250Gm ST - used (L) engraved base
1 57 $5.00 Arcturus 130% 1450 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Zenith 140% 1550 / 1225Gm ST - used (L) engraved base
1 57 $5.00 Philco 120% 1200 / 1225Gm ST - used (L) engraved base
1 57 $4.00 Sylvania 140% 1500 / 1225Gm ST - used (rb) ---
1 57 $4.00 National Union 140% 1600 / 1225Gm ST - used (rb) ---
1 57 $4.00 National Union 140% 1450 / 1225Gm ST - used (rb) ---
1 57 $4.00 GE 120% 1250 / 1225Gm ST - used (ob) ---
1 57 $4.00 RCA Radiotron 130% 1400 / 1225Gm ST - used (L) ---
1 57 $4.00 RCA Radiotron 120% 1050 / 1225Gm ST - used (L) ---
1 57 $4.00 RCA Radiotron 130% 1350 / 1225Gm ST - used (L) ---
1 57 $4.00 RCA 140% 1350 / 1225Gm ST - used (L) ---
1 57 $4.00 RCA 115% 1100 / 1225Gm ST - used (L) ---
1 57 $4.00 RCA Victor 120% 1250 / 1225Gm ST - used (L) ---
1 57 $4.00 National Union 120% 1250 / 1225Gm ST - used (L) ---
1 57 $4.00 National Union 140% 1500 / 1225Gm ST - used (L) ---
1 57 $4.00 National Union 120% 1300 / 1225Gm ST - used (L) ---
1 57 $4.00 National Union 125% 1300 / 1225Gm ST - used (L) ---
1 57 $4.00 National Union 140% 1450 / 1225Gm ST - used (L) ---
1 57 $4.00 National Union 120% 1250 / 1225Gm ST - used (L) ---
1 57 $4.00 Sylvania 135% 1000 / 1225Gm ST - used (L) ---
1 57 $4.00 Sylvania 140% 1800 / 1225Gm ST - used (L) ---
1 57 $4.00 Sylvania 130% 1400 / 1225Gm ST - used (L) ---
1 57 $4.00 Philco 140% 1400 / 1225Gm ST - used (L) ---
1 57 $4.00 Philco 140% 1500 / 1225Gm ST - used (L) ---
1 57 $4.00 Philco 120% 1400 / 1225Gm ST - used (L) ---
1 57 $4.00 Ken-Rad 115% 1200 / 1225Gm ST - used (L) ---
1 57 $4.00 Raytheon 120% 1600 / 1225Gm ST - used (L) cat:312-248
1 Z-57 $4.00 Zenith 110% 1200 / 1225Gm ST - used (L) engraved base - paint on tube
1 57-S $3.00 unknown 140% 1700 / 1225Gm ST - used (L) shield missing
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