Up for sale is this extremely cool and complete Pioneer Bendix Bank Indicator from Army aircraft from the 1940s-1950s, although I am not sure which aircraft used this.

The model number is 1700-1A-C.1, and it appears to be complete and is still full of oil. The pictures show the condition. I suspect if it were installed in a plane that it would probably work again, or it would just be a cool piece to have on your desk or shelf!

I will entertain reasonable offers, thanks for looking!