1953 Maserati A6GCS/53 Spyder

American importer who ordered the car as a demonstration vehicle; it was shipped to New York City upon completion and used for press and customer events.

Resident of Cranford, New Jersey; immediately entered the car in competition after purchase and drove it in multiple American events.

Founder of the Koster and Keunen cosmetics firm; the car was largely inactive in competition during his ownership.

Brothers who operated a body shop in Turnersville, New Jersey; they modified the car for racing, adding a roll cage and eventually replacing the original drivetrain with a Corvette V-8 and transmission.

Based in Iona, New Jersey; sold the car without its engine after four years.

A teacher who installed his own Chevrolet V-8 and retained the car for approximately 24 years before selling.

Italian car enthusiast known for operating a Maserati owners' network and publishing a dedicated marque magazine; fitted a replacement engine and showed the car at marque gatherings.

Japanese collector who funded a major restoration by specialist Nino Epifani in Northern California and used the car in touring events.

Texas-based owner who returned the car to Epifani for further work, including fitting a correct period gearbox and a newly manufactured Italian rear axle component.

One of two successive American collectors; the correct A6GCS/53 engine numbered 2067 was sourced and installed during this ownership period.

Second of two American collectors who owned the car in sequence; participated in vintage events including the Mille Miglia Storica and Belgian rally during this chapter.

Co-driven by William Eager; completed 66 laps before an incident ended the run.

Held at Andrews Air Force Base in Washington DC; the car also competed in the President's Cup at the same venue, finishing 8th overall.

Same event meeting as the preliminary race at Andrews AFB.

Took place roughly one week after the Andrews AFB event; Lloyd drove the car on this occasion.

Held in Pennsylvania; McKnought resumed driving duties for this hillclimb.

First recorded competition appearance under Diaz brothers ownership; car had been modified with a roll cage and other additions.

Four additional races at Vineland before the end of the 1959 season.

First of several appearances at Vineland Speedway near the Diaz brothers' home in New Jersey.

Same meeting as the April 1959 preliminary contest at Vineland.

Two further outings at Vineland in spring 1960 under Diaz ownership.

Car was running the Corvette V-8 drivetrain substitution by this point.

Car presented at this marque gathering by owner Frank Mandarano as part of his participation in several Maserati club events.

Touring event in which Kobayashi participated following the Epifani restoration.

Second Colorado Grand appearance under Kobayashi ownership.

Concours appearance under American collector ownership.

Two-day rally held in Belgium.

Second participation in the Belgian two-day rally.

Addition of a roll cage, external rearview mirror, and a trident badge fitted within the grille aperture, carried out by the Diaz brothers in preparation for further competition.

Original factory engine and gearbox removed and replaced with a Chevrolet V-8 and Corvette transmission; a Dana 44 rear axle was also installed.

Work carried out by or at the direction of the Diaz brothers over the winter of 1959–1960.

Chevrolet V-8 engine installed by Louis Casazza to replace the missing original powerplant.

Car was acquired without any engine; Casazza sourced and fitted his own V-8.

A purpose-built replacement engine was installed by Frank Mandarano to replace the non-original V-8.

Substantial restoration commissioned by Hiroshi Kobayashi and carried out by Nino Epifani in Northern California.

Further restoration work by Nino Epifani, including replacement of the non-original Chevrolet gearbox with a correct A6GCS/53 unit and substitution of the American rear axle with a newly manufactured Italian-specification component.

Commissioned by Dr. Julio Palmas after his acquisition of the car in August 1998.

A correct A6GCS/53 engine, bearing stamp number 2067, was sourced and installed to restore mechanical authenticity.

Carried out during the ownership period circa 2004–2006 by one of the pair of American collectors.