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1988, Macao. Proof Silver 100 Patacas. Grand Prix! KM-11. PCGS PR-69 Deep Cameo!

Mint Year: 1978 Reference: KM-11. Mintage: 5,000 pcs.  Denomination: 100 Patacas  - 25th Anniversary of Grand Prix Condition: Certified and graded by PCGS as PR-69 Deep Cameo! Material: Sterling Silver (.925) Weight: 28.28gm Diameter: 37mm

The Macau Grand Prix is a motor-racing event held annually in Macau, one of China's Special Administrative Regions. It is known for being the only street circuit racing event in which both car and motorcycle races are held. Every year in November   hundreds of racing drivers and riders compete in different categories   of motor-racing, including single-seaters, touring cars and motorbikes.

One of the highlights of the race weekend is the Macau Formula Three Grand Prix,   which features many national Formula 3 champions and drivers around the   world. Due to the challenging nature of the circuit, which consists of   fast straights (a Formula Three car can reach a top speed of 275 km/h (171 mph) at the end of this stretch),   tight corners and uncompromising crash barriers, the Macau Grand Prix   is famously known as one of the most demanding circuits in the world.   Many current or former Formula One drivers have participated in the event early in their careers and some   of them have won the prestigious prize. Famous winners include Riccardo Patrese, Ayrton Senna, Michael Schumacher, David Coulthard, Ralf Schumacher and Takuma Sato.

Since 2005, the double-header Guia Race of Macau,   which traditionally features touring cars from world-renowned car   manufacturers, has officially become the final two races of the FIA World Touring Car Championship (WTCC).