I've seen pictures but never had a Type B (67.5 volt battery) in hand. I just got one at an auction in a box of tubes I bought. It looks just like a giant 9v battery. Same sort of clips on top, just a tad larger.
It's a RCA No. VS 218.
Of course it's dead, but I'm keeping it because it's kind of historic....
I imagine it dates back to the 1930s or 40s. But there is no leakage and it's package is clean.
I just calculated. It must contain 45 cells inside its cardboard container.