BROLITE® by Broughtons, Leicestershire, England
Vintage-style real Bakelite unsprung door knobs and door handle SETS in Black. Sets are pairs and include the spindle with grub screws & spacer washers. They should suit Rim Locks as well as Mortice Locks & Latches. Designs are expertly modeled on the early 20th century originals with the aid of 21st century computers. All items include fixing screws.
Don't forget, a door knob normally requires a deeper than usual door latch (ideally a 4" deep) to give plenty of clearance for knuckles when outside the room.
A special feature: All handles and knobs are interchangerable giving a huge number of combinations