The pins are standard logos in the 4 London 2012 brand colours, but in a 'mini' size of 18mm x x20mm and are pin number 0451 - 0454. These pins are limited to 350,000 pieces each whereas the original logo pins are unlimited and can made as required.
There is also a new version of the Union Flag logo pin. This is pin 0987 and has an issue size of 1.5 million pieces. it is the same size as the original logo pins. This pin is not a cut-through pin, i.e. the gaps between the numbers are filled-in. The pin also appears to have a resin layer over it rather than the standard enamel finish.
This is now the 9th version of the Union Flag pin in the range of 2,012 pins and looks to be the replacement for pin 0011 which may be close to selling out despite its 100,000 issue size.