1F4 Delco Radio VACUUM TUBE NOS - GUARANTEED

Delco 1F4 VACUUM TUBE, In Box. Part of a large cache of tubes - this one comes from my personal collection of new tubes, many dating back to the 1930's and before. Box is a little rough and the tube was removed for photos, but otherwise it is NOS. Tubes have not been recently tested, but are nevertheless GUARANTEED against DOA.