1910s

1910s image2.jpg






This is the earliest known logo, from the company's website.

1920s

1920s image1.jpg


This logo followed with the removal of the "SINCO" brand and its replacement with more symbolic imagery of the company's business. The corporate colors of green and red were added here for the first time.


1930s

1950s image1-0.png


Here the logo was further simplified to reflect the primary business of gasoline sales. The green color was also lightened.



1950s-present

Sinclair.svg

This is the first logo to feature the company's advertising mascot, an apatosaur nicknamed "Dino." The company still uses this logo today.

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