INDIA 1958-63 1n.p. blue-green error, SG399aIndia 1958 63 1n. p. blue green, watermark 374, error IMPERFORATE VERTICAL PAIR from lower right corner of sheet, SG399a. A fresh mint positional example with original gum. There are some small wrinkles as often seen, but of overall fine appearance. An attractive rarity. The Stanley Gibbons catalogue value is 700. ALERT ME WHEN ANOTHER IS AVAILABLE > SELL ONE OF THESE >