I have a few. Mainly old Honeywell Cronotherm thermostats with the old clock works in them. Interesting thing is the one I have that is not in parts still works like a champ. I'll see if I can find my pictures.
My aunt in DC had an old one on her Capitol Hill home that had an Ivory cover shaped like a church. Asked her for it when it need changing by some other company replaced it with a T87. Never found out where it went.
"The American Republic will endure until the day Congress discovers it can bribe the public with the public's own money.
- Alexis de Toqueville, 1835