The frames are 1/10 12K gold filled with mother of pearl nose pieces. The manufacturer's mark is LoC, though I can't figure out what company that is supposed to be, possibly Liberty Optical Company.
This was folded up inside the case. Love the 5 digit phone number.
Dr. Stephen P. Hill was apparently a member of the Florida State Board of Optometry from at least 1923 until 1933.