Don; There are several new additions to the 2005 Edition, but frankly, probably not enough to warrant the purchase of the 2006 Edition if someone already has a 2005 Edition.

I've been receiving quite a few requests for my out of print Puerto Rico Catalog during the convention and also upon our return back home that I decided to publish a limited number of the 2006 Edition with the new updates.

Addtionally, several collectors are still using my 1999 Edition and a few have cited on occassion in their recent ebay descriptions ... "not listed in Black's Catalog" ... when offering PR chips for sale because they have been unable to purchase a 2005 Edition.