This set is what we call a family. All 7 pieces came from the original door,and have stayed together. We have not cleaned the set. The mortise lock,has been blown out and oiled and the key tested. If you choose, the entire,set can be cleaned with steel wool and a metal cleaner to brighten the cast,bronze, but many of our customers prefer the 100-year-old patina., ,Charles Eastlake (1836-1906) was a British architect and furniture,designer. Not liking the Victorian design of heavy, fancy furniture,and hardware, he decided to design a more geometric style based on,old English and Gothic patterns. After his book of design was published,in the early 1870s, an Eastlake movement or design reform occurred,in the late Victorian period. His Egyptian-type patterns were more simple,and because they were in low relief, were easier to clean., ,The maker of this knob and pattern is not known. The cast bronze belted knobs,are 2 1/4″ passage-door size and decorated on the topside and backside. ,The matching back plates are 5″ 1/4 x 1 1/2″. ,The mortise lock has a backset of 2 1/2″ and the box is 3″ deep, 3 1/2″ tall, and,1/2″ wide. The matching faceplate is 5 1/4″ x 7/8″. The matching strike plate,(decorated on both sides) is 3 3/8″ x 1″. Screws are included., ,This is a rare find.