6C4/CV133/EC90 GEC NOS, milspec, black plates, D/horse shoe getter, x-rare!
4 in stock
GEC 6C4/CV133/EC90 military print
These tubes come with black plates, some have horse shoe getter, some D-getter. Print styles may vary, but all have governmental CV133 prints as pictured. Please see example picture!
We reserve the right to deliver either print style.
These tubes are from the early 1950ies.
These tubes came in bulk from Swiss army surplus. All tubes are tested and burned-in/pre-aged (hence the colors on the tubes). The burn-in was done to secure stabilized operation in highly sensitive measuring instruments.
Some tubes may carry values written on them by the army personnel or may have faded prints. This does of course not affect the proper operation.
All tubes are guaranteed to test as new!