New Zealand 1989 Health Mini Sheet O/P World Stamp Expo Cat Value $45 MNH. This mini sheet of stamps is a rare find for collectors. The sheet is in mint condition and has never been hinged. It features a beautiful design that showcases the importance of health and wellness. The stamp is overprinted with "World Stamp Expo" and is valued at $45. This stamp is a valuable addition to any collection and is a must-have for New Zealand and Pacific Island stamp collectors. The stamp is from the Pacific Islands & Oceania region and represents the beauty and culture of New Zealand. Overall, this is a unique and highly sought-after stamp that is sure to impress any collector.