The product is a set of two vintage paperback books titled "Czechoslovakian Glass and Collectibles" by Dale & Diane Barta, published by Collector Books in 1991. The books are written in English and are illustrated, making them a valuable resource for collectors interested in glassware and antiques. The authors provide insights and information about various collectible items from Czechoslovakian origin, making these books a must-have for enthusiasts looking to expand their knowledge and collection.