3-wheel keyless combination lock, model M6730 MP, by Sargent and Greenleaf, New York, U.S. A., with combination changing key, c.1949 3-wheel keyless combination lock 1949
Chubb's six inch five bolt combination latch with key, c.1865 Chubb's six inch five bolt combination latch circa 1865
Combination latch with five bolts, no key (strike plate with mechanism), by Chubb patented 1822 with door frame staple, 1865 Combination latch with five bolts 1865