[jayoungs]

Just came across a box in some very old radio stuff I inherited about a year ago. Found it has about 25 tubes -- each in individual sleeves. One of the tubes is a 6G5 eye tube and is a shoulder type. Looks brand new, but not tested yet. I have not encountered a shoulder eye tube yet in my infant stage of radio collecting. I found a little info about their lineage on the web, but very little detail. Anyone know any background and, especially, is there a particular group or type of sets these were typically used? Thanks.