I"m not sure if the white on the drawers is original to the cabinet but it is an early production of that particular style of Florence Knoll cabinets. The link to the site below says DOF is 1950-1959.
Link: https: //www.1stdibs.com/furniture/storage-case-pieces/dressers/set-of-early-florence-knoll-chests/id-f_725595/
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