Davis made two 3/4 size machines--the model T (similar to Singer 28 or 128) with disc tension facing operator and the model N (Minnesota D) with tension on top of the arm. There's also the model G (Burdick, Minnesota B) which is 9/10 size. I wouldn't mind stumbling across a nice 3/4 size Davis and case with HC.
I once unknowingly got in a bidding war with a fellow QB member for a Vertical Feed and wound up paying twice of what I should have.
Jon