The first years they were quite successful with the model Piccolo. Karl Slevogt, who had worked as engineer for Laurin & Klement, was engaged by Apollo. A 1921 prototype with a V-8 engine was not put into production.

Apollo emblem.
Apollo emblem.
1922 Apollo "vehicle" logo. (source: Radiator Emblem Collection)
1922 Apollo “vehicle” logo. (source: Radiator Emblem Collection)
1916 Apollo "star" logo. (source: Radiator Emblem Collection)
1916 Apollo “star” logo. (source: Radiator Emblem Collection)
1921 Apollo ad. (source: Radiator Emblem Collection)
1921 Apollo ad. (source: Radiator Emblem Collection)
Apollo 8 ad. (source: Radiator Emblem Collection)
Apollo 8 ad. (source: Radiator Emblem Collection)