Antique 19th century carriage spectacles railroad eyeglasses Ruby Red

Antique 19th century carriage spectacles railroad eyeglasses ruby red rare ruby red sunglasses intended for wear when traveling by rail to prevent airborne locomotive cinders from endangering the eyes, c. mid-19th century notice one arm is absent. these are non prescription glasses. panels move fine. some calcification of frames. 4” across side panels 3.75” length arm to ear