There is no shortage of Olympic pins to be traded in London.

Prince William and Duchess Kate sported pins during an appearance at the Olympic tennis tournament at Wimbledon.

General view of 2012 London Olympics pins at the John Lewis store at Statford City.

Dozens of people set up shop as they chat to pin collectors next to Olympic Park.

Detail views of Olympic pins at Olympic Park.
 

Pin badges are seen on the jacket of man at the London 2012 Olympic Games.

A journalist wears her Olympic pins at the 2012 Summer Olympics.

Pin collector Linda Li of Guangzhou, China holds some of her pins outside the Olympic Village.

Take a look at a detailed collection of Olympic pins on a scarf.

A detail shot of pins during Team USA training for athletics on Day 5 of the London 2012 Olympics.
 

Ioannis Ioannidis, from Greece, displays some of his pin collection on his hat while speaking with people next to the Olympic Park in London.

Serena Williams receives a pin from a fan after a doubles match at the All England Lawn Tennis Club in Wimbledon.

Leonard Braun, an Olympic pin trader outside Olympic Park, shows his collection prior to the opening ceremony.

Tennis players Francesca Schiavone of Italy (left) laughs with Kim Clijsters of Belgium as they exchange pins at the All England Lawn Tennis Club at Wimbledon during training at the Games.

Timothy Jamieson of the Coca-Cola showcasing team displays his pins in London.

Barbara Crowder (left) trades pins with Los Angeles native Leonard Braun, who has been trading pins for 25 years and has attended 11 Olympics.

Australian pin collector David Blair wears his pins in style as he prepares for the Olympics.

A trader displays his pins ahead of the London 2012 Olympics.

London 2012 pin badges go on display at the launch of the London Olympic Games official merchandise.

Pin collectors chat next to Olympic Park in London. Some pin traders erected small displays covered in velvet to showcase their wares.