Oscar Melillo appears on card #3 of the 1933 DeLong baseball set, a vintage issue noted for its large format and scarce survivorship. Graded examples are rare, contributing to its Unknown rarity designation and current market value of $22,637.75. Collectors view the card as an important early-20th-century piece that reflects both player history and the volatile pricing of unopened-era baseball ephemera. Sales and grade data drive much of its valuation in specialist markets.