The New Zealand Mint "Great Motorcycles of the '30s" colorized silver coin series immortalized five famous European motorcycles. The 2007 "1937 Ariel 1000 Square Four" 1 oz bullion coin features a realistic image of a red, white, and black Ariel, with the blue horseshoe Arial company logo beneath. The obverse of the coin has the Raphael Maklouf image of Queen Elizabeth II, the face value of $2, and the name of the Cook Islands, where the coin is legal tender.

The 1937 Ariel Square Four sported a completely redesigned 995cc engine from the legendary Edward Turner. This model, known as the 4G, was the longest-running version of the Square Four, being produced through 1959.

The Ariel motorcycle company started business in 1870, making penny farthing bicycles. They produced their first motorcycle in 1902, and soon became known as a major innovator in the industry. The success of the Square Four not only helped Ariel survive the Great Depression, but also to buy Triumph in 1936. Edward Turner was named manager of Triumph, where he designed the famous Triumph Speed Twin.

Each of the five 1 troy oz .999 fine silver coins in the "Great Motorcycles of the '30s" series has a pattern of a motorcycle tire tread around the edge, and is packaged in a clear mint capsule sealed in a colorful card that also serves as the certificate of authenticity. Each of these motorcycle coins were limited to a world-wide mintage of 6,000 coins. You can collect all five at Gainesville Coins!