Carl Zeiss 750 mm f:6,3 WWII air-force lens

[Miguel Coquis]

Interested in fast lenses, I wonder if any body can drop some information about this particular lens.
Would like to know image circular dimension.
Thanks for your lights.
MAC

[Miguel Coquis]

sharing info,
found one like this recently and after mounting it on a lens board, it looks like a tele lens, with short bellows extension as 50 cm it focuses infinity, seems to have great coverage as big as 14x17", a little big heavy though, will see....