One (1) SIEMENS EF40
EARLY German Edition of EF40 - seen in German high quality classic vintage amplifiers !
Good Rim Lock tube. Images Are made from few sampling. We did not open them all to look at.
All appear from a same batch / epoch.
Usually, not always, top paper-sealed. Some, Not All, are factory staple-sealed at inner bottom lid.
Siemens made High Quality electube in this era.
We have about 30 types of vintage Siemens miniature tubes listed. A combine will save postage.