Graflex Grafmatic Rapid 4x5 View Camera Film Holder w/ Six Septums -BGN, Read-
These are cool!
Pull out the slide, flip a tab, pull out the slide again and you have loaded a fresh sheet of film. You can actually fire your 4x5 once every couple of seconds with practice. It is not a motordrive but it is not bad.
This back is missing the handle for the darkslide making it a bit challenging to get out. Otherwise this back is in good condition and works perfectly. There is some faint writing on the inside (see photos) but it is not visible while in use. It comes with six septums.