This style of hinge is used on the drop leaf of the old secretary desks. The wide beveled wings are mortised or buried into the wood. This pair is old and has some pocking. The steel hinges still have some brass-tone finish. They are sturdy, have been cleaned, oiled, and in very good condition.
The hinges are 1 3/8 inches wide and 2 inches across both wings. Each wing is one inch deep.
We have very few of this style. They are elusive, for some reason. Screws will be included.