(20 ) Pieces SIEMENS DK91 / 1R5 tubes!


RARE OLD 1950s (?) Vintage and In Own Carton.


Horse shoe format of Getter Ring atop.

                          They are top paper-sealed and are factory staple-sealed at inner bottom lid.


Siemens made High Quality electube in that era

about 30 types of vintage Siemens miniature tubes listed. combine saves postage.