This door knob set is from the mid 20th century. The brass door knob is oversized with matching cast brass rosettes. The other door knob is made of brushed aluminum. These have first generation locking mechanisms that work with current door hardware and are complete except for the latch part, which is a current stock item. The manufacturer and date of creation is unknown. Heavy scratches and surface wear on the aluminum knob. One available. The dimensions are Brass knob 2.5 in. diameter x 1.75 in. D, rosettes 3.5 in. diameter x 0.5 in. D, aluminum knob 2.125 in. diameter x 1.75 in. D, rosettes 2.75 in. diameter x 0.375 in. D.