This Montserrat 1981 90c Royal Wedding sheetlet with variety No Watermark SG 510b is a must-have for stamp collectors. The stamp depicts the marriage of Prince Charles and Lady Diana Spencer, making it a great addition to any collection with a focus on British royal events. The quality of this stamp is described as Mint Never Hinged/MNH, meaning it is in excellent condition with no evidence of previous use. The stamp was issued in Montserrat and belongs to the British Colonies & Territories category. Stamp collectors will surely appreciate the rarity of this item, as well as its historical significance.