Rare two sets of Ruth Richmond / Weiser gold flake Lucite door knobs. These are the most sought after clear Lucite with the floating gold flakes. One set is even rarer as it has a locking mechanism. Push the doorknob in and twist to lock. The locking set has a hole drilled for the exterior knob. This is a safety feature in case someone is locked inside the room and cant get out.A long thin rod or something like a drill bit could be us...ed to release the mechanism in case of an emergency.I see different people trying to place the age of these doorknobs. I would say they are for the 1970s.Being sold as pictured. I do not have the Weiser latch plate for the door jamb.
There is a great article on Ruth Richmond at Sarasotamagazine. EBay will not allow me to paste the address, but if you do a search on "Doorknobs by Sarasota design pioneer" you should find it.