De Trey's tooth colour sample Designer (Person) Unknown Manufacturer Amalgamated Dental Co Date 1965 - 1975 (circa)
Plaster cast model of lower jaw Designer (Person) Unknown Manufacturer Unknown Date 1950 - 1999 (circa)
Plaster cast model of three upper teeth Designer (Person) Unknown Manufacturer Unknown Date 1950 - 1999 (circa)
Plaster cast model of upper jaw Designer (Person) Unknown Manufacturer Unknown Date 1950 - 1999 (circa)
M.D.Co. tooth colour matching set Designer (Person) Unknown Manufacturer M.D.Co. Date 1940 - 1949 (circa)