I just picked up another old Speed Graphic ( love these old beasties )and this o ne came with a spare lens that I have not seen before. It is a Wollensak 3.5" f 12.5 EXWA. Now I realise that this is one slow lens, but I am guessing that EXW A stands for EXtreme Wide Angle. Does anyone know the image circle on this lens ? I am wondering if it might cover 5x7 as well as 4x5.

Thanks, -harry