Q:I inherited an antique grandfather clock from, appropriately, my grandfather. His father arrived in this country in 1852. The wooden case is 9 feet tall. The face is inscribed "Jno Child, Philadelphia." The glass is original and the works include a multicolor moon phase. The clock and case have both been repaired, and I know the weights and pendulum are not original. The clock runs and its locks work. Can you guess at its age and value?

A:John Child was a well-known Philadelphia clockmaker who worked between 1810 and 1830. ("Jno" is an old abbreviation for "John.") So your clock is truly an antique. Its value has to be determined by someone who can look at it in person. It could sell for hundreds of dollars or well into the thousands.