The product is a pair of Christie's International Magazine issues from May 1990 and September 2006. These physical magazines are in English and feature art and antiques topics, with a focus on Mondrian art and antique paintings. They are considered collector's editions, illustrated, and 1st editions, making them valuable resources for art and antique enthusiasts. The bimonthly publication offers insights into the world of art and collectibles, making it a coveted item for those interested in the art and antique market.