I acquired a Toyo 4 3/4 x 6 1/2 Grey metal colored field camera, which has a removable 4x5 revolving back on it. Very nice camera. I am curious about its age, and about the odd size cast into the nameplate data. Was there ever a 4 3/4 x 6 1/2 back? Seems to me that is just a wee smidge shy of 5x7 (or 7x5 for you Brits). Was there ever a 5x7 back? I wonder what time period this was made?
The features of this camera seem near identical to current Toyo field cameras, as in placement of the controls, and how you operate them.
I was recently surprised to find out that Toyo picked up the production of the Graflex Super Graphic press camera and manufactured it as the Toyo Super Graphic from 1979 thru 1985. One learns something every day.