SAN MARINO (1947) US stamps*. Flag*. Pair imperforate horizontally. Scott No 267, Yvert No 309.
AVAILABLE AT $30
SAN MARINO (1947) Roosevelt*. Flags*. Perforation error in bottom pane of 20, with an extra row of perforations across the middle of the bottom strip of 10 stamps. Scott No C51c, Yvert No PA55.
AVAILABLE AT $140