Brand Name: 2 (upside down inside circle) / DIA-D
Company: Gladding, McBean and Company
Brickyard Location: Pittsburg, Contra Costa County, CA
Operating Years: 1943-1962
Years Brick Made: 1943-1962
Description: Upside down 2 impressed within a circle over brand DIA-D impressed within a rounded
rectangular name plate.
Comments: For more information, see under "Brickmakers" the Gladding, McBean and Company, Pittsburg.
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