Title: Lot of 3 used 3D21 Vacuum Tubes
Item: [3D21-1] $5.00

Title: Lot of 3 used 3D21 Vacuum Tubes
Item: [3D21-1] $5.00

---

Here are three used 3D21 pulse modulator tubes.

Condition and test results listed below.

3D21-A, ST, Hytron, used untested, filament ok
3D21-B, GT, CBS, used untested, filament ok
3D21-B, GT, CBS, used untested, filament ok

---

How To Order:

Purchasing our bargain bin 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.
Contact MDB Ventures sales@mdbventures.com