The product is a World Cup 1966 First Day Cover featuring the winners of the tournament, England, with a 4d stamp. This item is considered football memorabilia and belongs to the category of postal covers. It commemorates England's victory in the 1966 World Cup, making it a valuable collectible for fans of the sport and collectors of sports memorabilia. The cover captures a significant moment in football history and is a unique piece of postal memorabilia from that era.
