This is an excellent antique paperweight from the early 1900's. Made for advertising, this paperweight features the company name, CENCO, as well as an image of their headquarters in Irving Park, Chicago. Cenco was a manufacturer of laboratory supplies, apparatus and chemicals. This piece has no chips or cracks, in very good condition.
The Central Scientific Company was founded in 1900 in downtown Chicago. It was formed out of what was the Olmstad Scientific Company. Central Scientific manufactured and distributed science teaching equipment for schools, colleges, and universities by catalog mail order. The trademark "CENCO" was used from 1909 onwards. CENCO dominated the field of selling science education equipment through their mail order catalog.
By 1935, the company established itself as one of the leading national suppliers of science equipment. During World War II, part of the manufacturing facility was turned over to the production of war necessities, making bombsights for airplanes and fuses for large bombs. After 1968, the company began having financial difficulties. In 1974, the assets were sold off to competitors. The educational business retained the name Central Scientific Company.
In April 1979, Central Scientific's assets and activities were acquired by two businessmen from Buffalo, New York. They sold the business to Sargent-Welch (their main competitor) in 2000.