The Cooper was with the following owners:

- 1954 Walter Grell (delivery as listed in the Cooper Register).
- 1955 Glimen
- 1956 - 1960 Harry Zweifel (various races, see additional document)
- 1960 - 1961 Theo Kündig (conversion to Formula Junior)
- 1962 Martin Maraggia (Formula Renault)
- ? Walter Grell conversion to original (museum)
- ? Mario Occhiuzzi (restoration green)
- until 2010 at Peter Christen
from 2010 in our possession (various uses at events)

The Cooper is currently running on ethanol, but must be run on methanol.
This should solve the cooling problems of the engine. In England they only run on methanol.
The clutch is dragging and needs to be replaced.

We had the engine completely overhauled in 2012 by Otto Lantenhammer in Munich.
The car has always been maintained and serviced by specialists.
Many invoices and documentation are available.
Last time it was in October 2020 at Krauser Automobil for revision of ignition magneto.

The car comes with
- a specially manufactured CNS silencer at approx. 90db
- a set of Michelin X tyres (at the moment the car is on new Dunlop Racing Tyres)
- and some special tools

Additionally, a matching trailer can be purchased.