9-10 October 2014

Offered from the collection of John Moir

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Lot 135

1926 AC 12/24 Royal Roadster

  • Chassis no. 30916
  • Engine no. 5763

Sold for $49,500

24 bhp, 1,496 cc SV inline four-cylinder engine with two valves per cylinder, three-speed manual transmission, live front and rear axles with quarter-elliptic leaf-spring suspension, and rear-wheel mechanical drum brakes. Wheelbase: 105 in.

  • Offered from the collection of John Moir
  • Beautifully restored; an AACA award winner
  • A CCCA Full Classic

By 1907, Autocars and Accessories Ltd. had reorganized as Autocarriers Ltd., which continued until 1921, when well-known British motoring entrepreneur Selwyn F. Edge gained control of the firm. Founders John Weller and John Portwine resigned, and Edge proceeded to rename the company AC Cars Ltd., the name by which it would continue to produce automobiles for decades to come.

In 1926, most AC products were powered by the two-liter, six-cylinder, overhead-cam engine that Weller had designed in 1919 and which the company would produce with continual improvements until 1963. The 12/24 was an exception, as it was powered by a 1,496-cubic centimeter, side-valve, four-cylinder engine that was supplied by well-known British motorcycle manufacturer Anzani. This would be the final year that a four-cylinder model was available, but with peppy performance and attractive design, no one could say that it did not go out with a “bang.”

John Moir describes his Royal Roadster as being “a very handsome car with elegant nickeled instruments, coco mat pads on the running boards, and a rumble seat. On the rear end of the driveshaft, protruding through the differential, is a rotating disc, which can be clamped to stop the car when the driver needs to park; I think this may be the first use of a disc brake.”

When acquired for the collection, the car was finished in black and tan, but expert restorer David Steinman refinished the body in its present tan with dark green trim, brown leather upholstery, and canvas top. In a book of mascots and radiator ornaments, Mr. Moir had found an illustration of a teddy bear holding an AC logo and wearing a British three pence around his neck. Mr. Steinman and his son, a dentist, modeled a bear in clay and cast it in brass, and Mr. Moir found a 1926 three pence coin for the bear’s belly. This mascot is on the car today. This Royal Roadster has been shown but seldom driven since completion of its restoration. As such, it is still well finished in all regards, with bright, shiny paint and excellent trim, and it would polish up nicely for continued concours appearances.

The car has been a great favorite of the Moirs, and it is also an AACA award winner. All pre-1939 AC automobiles are accepted by the Classic Car Club of America as Full Classics, which makes this beautiful machine eligible for their events as well. It is a wonderful jewel.

Please contact our exclusive automotive transportation partner, Reliable Carriers, for a shipping quote or any other information on the transport of this vehicle.

Alexander Weaver


+1 864 313 6844
California, United States

Alexander Weaver joined RM Sotheby’s in 2011 as a Car Specialist after graduating from Furman University in South Carolina. Born... read more

Augustin Sabatié-Garat


+44 (0) 74 1511 4179
United Kingdom

Augustin Sabatié-Garat joined RM Europe in 2012 as a Car Specialist after more than a decade in the collector car hobby. Gradua... read more

Barney Ruprecht


+1 203 912 7168
Ontario, Canada

Barney’s interest in classic cars began at an early age after being introduced to his father’s all-original 1965 Porsche 911. Barney l... read more

David Swig


+1 415 302 2247
California, United States

David Swig joined RM Sotheby’s West Coast division as a Car Specialist in May 2015. David is a life-long automobile enthusi... read more

Don Rose


+1 617 513 0388
United States

Don joined RM in 2006 after several years of professionally trading sports and classic cars, and after earning a reputation as a noted... read more

Donnie Gould


+1 954 566 2209
Florida, United States

Donnie Gould joined the RM team in 2002 as a partner and Car Specialist after more than two decades in the vintage automobile auction ... read more

Gord Duff


+1 519 352 4575
Ontario, Canada

Gord Duff began his journey with RM Sotheby’s in 1998. Since then, he has gained an intimate knowledge of a variety of marques a... read more

Jake Auerbach


+1 310 559 4575
California, United States

Jake Auerbach got his start in the automotive industry at an early age, spending his summers during high school working at a classic c... read more

Kurt Forry


+1 717 623 1638
California, United States

Having worked for Bonhams’ Automobilia department for over 10 years, Kurt Forry joined RM Sotheby’s with more than a decad... read more

Matt Malamut


+1 805 231 6410
California, United States

A long-time car enthusiast and Southern California native, Matt studied Automotive Technology at San Diego Miramar College and complet... read more

Michael Squire


+44 (0) 20 7851 7070
United Kingdom

Michael Squire joined RM Sotheby’s European Division in the summer of 2016. He comes to RM with a prestigious racing background ... read more

Mike Fairbairn


+1 519 352 4575
Ontario, Canada

As one of the three founding partners of RM Sotheby’s, Mike has a long-standing interest in the classic car industry. Graduating... read more

Oliver Camelin


+44 (0) 75 0110 7447
United Kingdom

With an extensive background in exotic sports car history and sales, a particular passion for American curves, and fluency in three la... read more

Paul Darvill


+44 (0) 20 7851 7070
United Kingdom

Paul Darvill joined the RM Sotheby’s European team at the beginning of 2015. Paul holds a degree in French and Politics from the... read more

Pete Fisher


+1 519 784 9300
Ontario, Canada

Pete Fisher was first introduced to antique cars in high school, working for Classic Coachworks in his hometown of Blenheim, Ontario. ... read more

Shelby Myers


+1 310 559 4575
California, United States

Shelby Myers grew up with the classic car industry infused into every aspect of his life. He had the unique opportunity to watch the R... read more

Tonnie Van der Velden


+31 653 84 19 60
United Kingdom

Tonnie Van der Velden joined RM Sotheby’s European division in September 2015 as a Car Specialist. A lifelong enthusiast, Tonnie... read more