I haven't had a chance to take this lens apart, although it does look to have 4 elements in 4 groups. Aparently it was pretty widely used as were variations of it. There were a bunch of 7.7 anastigmats made in various focal lengths.
It does seem to do 4x5 well. It is hard to tell exactly how good the coverage is because it is a pretty dim lens and I don't have a great dark cloth.