Watch Wonderland - Limited pieces of the Seiko SRPD15K1 are still available at Watch Wonderland. With just 2200 of them made worldwide and many of them in the hands of collectors, it's
Seiko Prospex Blue Butterfly Fish Automatic 200m Men's Watch SRPD15K1 – Spot On Times
Seiko SRPD15K1 “Blue Butterfly Fish” Ltd Edition - The Chrono Duo - Vintage watch sales
Seiko SRPD15K1 Limited Edition Baby Tuna aka Blue Butterfly Fish Automatic Watch Review - YouTube