7 - pin Bakelite sockets
NOS ( New Old Stock )
These are 7 - pin Bakelite Cinch Wafer tube
sockets.
They can be used in any 7 Pin tube project.
Cinch wafer sockets were made in the 1950's, 60's and 70's.
These tube sockets are used for 6X4, 6AQ5, 6AU6, 6BA6,
12BA6, 12BE6 AND 9002 and many others.