A 23 KARAT GOLD COMMEMORATIVE POSTAL BOOK BY THE DOMINICAN COMMONWEALTH. This is "Great Firsts in Aviation," a collection of 23k postal issue of the Commonwealth of Dominica. It is set No. 13909 from a limited edition of 35,000. Each stamp has a denomination of $16 each. New these would all cost $600. They were released one per month in the 1970’s.