Coins of Republic of India 1957 Vintage Porcelain Enamel Sign Numismatic Old 4#F. This product data sheet is originally written in English. Size 20 x 15 inches. Sign’s glaze is very good in condition. This sign is very rare for numismatic collector. Important part of indian coin history. Circa 1957 rare collectible. WE DEAL IN ANTIQUE PRODUCTS WORLD WIDE IN SUCCESSFUL MANNERS.