best book for Capped bust half dime

Looking for info on die marriages and the like... my wife and I just started a set and would like to understand the rarity aspect more of some of the die marriages
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One book to find them,
One book to bring them all,
And in the darkness bind them
Federal Half Dimes 1792-1837
by Russell J. Logan and John W. McCloskey
You can put me in the boat of the marriage, re-marriage collectors as well. All half dime questions welcome at anytime. Feel free to ask.
<< <i>Looking for info on die marriages and the like... my wife and I just started a set and would like to understand the rarity aspect more of some of the die marriages >>
take note too that some of the rarity ratings in the book are outdated, but not by too much, AND there is now an 1835 LM-12 (recently discovered) die marriage that the book does not address.
<< <i>I also suggest you join the John Reich Society. The Journal is worth more than the membership dues. >>
Join here
-Randy Newman