Man, I love old electrical equipment! For a while, I had an old DPDT 400A knife switch that came from an old industrial plant that was being remodeled into new office space. Single wooden handle, a wooden tie bar, and the "knives" were 3/8" thick copper, about 12" apart and 16" long to the pivot. Looked just like it came from Doc Frankenstein's lab.
I've been collecting old inspection stickers for a while as well. My wife thinks I'm nuts for pack-ratting these things [Linked Image]

Dallas