The first McDonalds set looks like 4 oversized pins spelling '2 0 1 2' and featuring ironing London images in the McDonalds brand colours. It looks like it comes in a branded box too.

The next set from McDonalds is a set of 19 pins, one for each summer and winter games that McDonalds has been a partner of the Olympics since 1976. There is a noticeable gap for Moscow 1980 when many countries boycotted the Games. The 19th pin in the set is the one for London 2012

The set from Coca-Cola is a traditional Coke bottle jigsaw set comprising of what looks like 8 pins. The Coca Cola/London 2012 composite logo is widely used in the set.

My assumption is that these are all sets out of the USA. If anyone has any details they can share, please email me or leave a comment.