A marrow spoon attributed to silversmiths Daniel Henchman and Nathaniel Hurd will be for sale at an antiques fair in England in April. Asking price: almost a quarter million dollars. The spoon has a cast 3-D hand at the end of the handle and a scalloped bowl. It's dated 1766-68. The high price is based on the quality of the silver work and the spoon's history (provenance), proven by the engraved words "John Wentworth Esq to Thomas Smith." Wentworth was the wealthy British Colonial governor of New Hampshire from 1767 to 1775, and Smith, also important in the Colonies, was...