Antique vintage wire rimed spectacles/eyeglasses w/steel temples

Pair of old or antique wire rimed eyeglasses. They measure 4 3/8" across between the temples. The temples are steel (magnetic) and the wire frames around the lenses and the bridge are non-magnetic. They are heavily worn and we think that the frames might be brass (but we're not sure).

These are marked on the bridge, but we can't make out the mark.