"Rare collection" refers to a group of items-often books, manuscripts, artworks, or artifacts-that are: 1. Uncommon or hard to find 2. Historically significant or valuable 3. Often old, limited edition, or one-of-a-kind 4. Preserved carefully due to their uniqueness In a library context, a "rare collection" usually includes ancient texts, out-of-print books, original manuscripts, or culturally important documents.