This guide will very quickly become the definitive work on Bachmann's UK market products in 4mm scale and upwards. It's up to date right to late 2010 and I'm sure will be revised and re-issued periodically.
Thoroughly researched, it has a potted history of the firm followed by sections on locomotives, coaches, wagons, accessories (including buildings etc), the Brassworks range and Underground Ernie.
So far, I've not managed to find anything missing from it from the rolling stock I own. It seems to be especially good on the limited edition items and helps the reader to trawl through the complicated variations of, for example, private owner wagons and boxed sets of them.
For each model, it gives a potted history of both the prototype and the model itself. You'll find out if the loco, wagon or coach you're buying was originally from Mainline or another source, if it has been re-tooled and an idea of its current value both in good unboxed and mint boxed condition.
Literally my only criticism - I've found a load of wagons I didn't know existed that I now want, and for such a reasonably priced book, it's going to prove jolly expensive!
If you collect Bachmann models, you really do want this book. It's an essential purchase, and given its price from some of the sellers on here, a complete bargain too.