The car we know as A3 is one of the original 5 prototype chassis developed by Robert Bamford and Lionel Martin.
The importance of this car was hidden for many years until it put up for sale by auction in 2001. It was discovered that this car carried chassis number A3 which made it the third Aston Martin ever built and the oldest still in existence. Despite having been modified again and again it somehow, against all the odds survived.
Now owned by the Aston Martin Heritage Trust (AMHT), in 2006, A3 underwent a full rebuild back to 1921 specification by Ecurie Bertelli.
During the 2013 Aston Martin Centenary event in Kensington Gardens, A3 was the very first car in a timeline of 101 significant Aston Martins.