Vintage Rodenstock Frames Glasses R5120 E

Vintage sturdy frames, prescription lenses and intended to be switched out at the eye doctor. I can't make out the last 3 numbers on the interior. The exterior hinge portion on one side is missing the silver R Emblem. Both sides are shown in enlarged photos to note the contrast. Ships safely within 1-2 business days. In overall good condition, but they are older, vintage glasses and do have some signs of wear.