Maurice Bull has written a 5 volume set of books on the Halfcrowns of Charles I. The books are profusely illustrated and contain all known examples complete with provenances. It is being privately published and there are only 100 copies avaialble. If you are interested, send me a PM and I will give you the email to contact the seller. I won't post emails on the forum.
That sounds like an awesome book. I won't get one, I'll leave it for the half-crown guys. I'd love to see a book on shillings like this.
