Superb book - and the quality of the Herridge edition is as good as the original Bay View Books edition. The author is a long-standing Vincent owner and expert, and a leading light in the Vincent Owner's Club. She has made full use of her contacts to produce an excellent publication.
The book spends ten pages on the Series A models to give some background to the book's major subject, the post-war Series B, C and D Vincent-HRD twins and singles. As it says on the cover, it's a restorer's guide, carefully listing original equipment (giving component manufacturer and part numbers in many instances), finish and accessories, fixtures and fittings - right down to the toolkit! It is not a history of these machines, although a lot of factory history is obviously included to explain why certain modifications were made, but is well worth reading whether you have a Vincent in the garage waiting for restoration or are just simply interested in these motorcycles.
Precise and accurate text covers every detail of these machines, backed up by superb photos of various models, restored and unrestored. Original finish is minutely described, with clear photographs of tank transfers and gold lining. Invaluable appendices cover engine and frame numbering, production modifications, common screw threads found on Vincents. I haven't found a mistake yet!
A section on buying Vincents is also included to show the sort of thing that the unwary buyer can be presented with.
Highly recommended for anyone - and essential reading for the Vincent owner.