Here is an antique pair of Ben Franklin style eyeglasses. The loop ends,  a ribbon could be tied to, are an indication that the glasses are from the 19th century and perhaps even the late 18th. At the latest, they co7ld be from the few years of the 1900's.  The lenses are reading glasses. The frame is a grey metal - it does not attract a magnet, and does not appear to be silver. The hinges are secure but have a bit of rust on top of the screws that hold them together. There's a bit of a gap between the lenses, which are rather rough on the edges, and the frame at the hinge - see photos. The temples are also slightly bowed. The distance from hinge to hinge is just under 4 1/2 inches, and between the edges of the frame 3 3/4 inches. The bowed temples would accommodate a larger face. The lenses are 1 1/4 by 1 inch. The temples are 4 7/8 inches long