I've finally got around to blogging this one. I've had it a while, but just never got around to it. For some strange reason it was a real pig to photograph. My 'hit rate' of good-to-bad photos isn't great at the best of times, but I tried shooting this 4 times recently!
Anyway, they came out half decent in the end.

So, this is the so called '2nd Gen' 15640, as there were 3 models that Heuer decided to call 15640, which is a bit confusing.

The 1st Gen: 11630 case, blue dial & bezel.
2nd Gen: 11630 Gloss black dial & bezel.
3rd Gen: 11063 cased version.

Maybe I've not been looking in the right places, but these seem to be fairly thin on the ground, anyone else got one?

More info here:
http://heuerville.wordpress.com/2012/09/14/heuer-skipper-15640-2nd-gen/

And Jeff's great Skipper table is here:
http://onthedash.com/docs/SkipperRefTable.html

Cheers
Stewart