This is a rare First Day Cover from Spain, featuring Scott# C144-C145 stamps that were canceled on the day of issuance. The cover was sent from Madrid to San Francisco, USA, making it a unique addition to any stamp collection. The stamps depict a historical figure and come in black color with decimal currency. The quality is marked as Used, but the stamps are in VF/XF (Very Fine/Extremely Fine) condition. The cover is from the 1951-1960 period and belongs to the Spain & Colonies region. It is uncirculated and uncertified, but its authenticity is ensured. The cancellation type is First Day of Issue, adding to its significance. This FDC Spain Scott# C144-C145 is a must-have for stamp collectors and enthusiasts alike.