4) Pink Butterprint
This beloved pattern is most commonly found in blue and white, but the pink version is a rarity that collectors scramble for. While the Butterprint pattern was produced from 1957-1968 and on many Pyrex models from carafes to bowls to casseroles, the pink was only printed on casserole dishes and often came in sets. Today these little beauties can sell for $100 a piece or more!
