New old stock 1950's vintage US made Raytheon JAN military issue 1AD4 tubes. These subminiature pentodes are in the original factory crates and individually boxed.
1AD4 is a battery pentode that normally operates at 45V plate (anode) voltage and has a very low power filament (1.25V at 100 ma) that will operate off a battery.
For more data please see: http://www.mif.pg.gda.pl/homepages/frank/sheets/138/1/1AD4.pdf