I still have a couple of boxes of it in 4x5.... expired 1967. I shot a few sheets from one box. Very heavily fogged but could still pull an image out of it. I was surprised at how thick this film felt between my fingers when wet with chemistry. The film base was quite floppy. Not stiff like later versions. I'm planning on using up the remaining sheets this summer, hopefully.
I wish Kodak would bring this film back... or that someone would make a REAL IR film again!!