Recommended books on vintage pocket watches...?

[Rowhyd]

I'm looking for a good book dedicated to vintage pocket watches (history, etc.)

Could anyone give me some good pointers? Thanks!

[Rowhyd]

http://www.amazon.co.uk/Pocket-Watch...7029140&sr=1-4

- this seems to be the best one (in terms of reviews etc.), but it's more cash than I want to spend on a book like this, since it's now out-of-print. Any other good recommendations?