Nuvistors, the tube world's response to transistors. Auction is for 4 miniature triode tubes 6CW4 and 4 associated tube sockets for chassis mounting. For RF and AF circuits.
Cf.: http://www.r-type.org/pdfs/6cw4.pdf
The 6CW4 was used by Ampex for their MR-70 tape preamps for example.
cf.: https://forum.polkaudio.com/discussion/197850/building-an-ampex-mr-70-playback-preamp.
The tubes for sale here are from an unfinished tube preamp project and may have been connected. Sorry no boxes. The tube sockets are new.