Keystone by Whiting Sterling Silver Sugar Shell Spoon

This is a lovely 6" long sterling silver sugar spoon with shell shaped bowl in the Keystone pattern by Whiting. It is monogrammed W. As is often the case with early silver, there is no maker's mark. It is stamped sterling pat'd Sept 7 , 1869. It is also stamped Goodrich & Kirby, which is probably the original retailer. This spoon is in extremely good condition.