It was first serial formula car in USSR constructed by A. Seiler and V. Paazik. Estonia-3 based on early car - Estonia-1 (by A. Seiler, 1958). First car was build at 1959. Serial production started at end of 1960. 36 cars was build to 1962. Prototype for all early TARK cars (E-1, E-2 and E-3) was british Cooper's formula-3 50's cars. But british cars was more fastly than TARK's cars, because TARK's had weakly engines and had more mass. Estonia-3 was Formula-3 (International and Soviet union classification) and Formula-4 (Soviet union classification after 1964) car.
There is only one Estonia-3 car in Moscow today. All another cars is lost.