Large Rare Antique 18th Century Solid Pewter Signed LR. Spoon 1700's 8.5. Up for sale is a very rare antique 18th century signed LR. It's made of thick pewter and has acquired a lovely patina from age.The spoon is signed and hallmarked underneath and in great condition. Measures 8-1/2 inches long by 1-3/4 inches wide.