Diamond [3] (United States) - AllCarIndex

The Cyclecar Company, based in Wilmington, Delaware, produced the Diamond automobile during a brief period from 1914 to 1915. The Diamond was notable for being larger than typical cyclecars of its time, featuring a 16/20 horsepower four-cylinder engine.

In 1915, the company reclassified the Diamond as a light car, although it retained the original company name. The vehicle was equipped with electric lighting and starting systems, which were considered advanced features for its era. Despite its short production run, the Diamond represented an early attempt to blend the characteristics of cyclecars with those of more conventional automobiles.