What is a detector muscle?

What is the value of an Enrico Caruso stamp? 1989 score Norm Charlton rookie card number 646? How much is a 1979 Jamaican 250 coin worth? What is the value of a World War 2 1934 German Luftwaffe Air Force Model 1 Dagger? What is a 1976 14k Canadian gold olympic coin worth? How much is a hank aaron550 worth? What is rate for airmail postcard from US to UK? How much is Jackie Robinson 1950 bowman replica worth? Are old pocket watches worth money? Where do you recycle pennies? Air mail 6 cent stamp on a envelope dated 1955 The other six cent stamps I have seen have an air plane facing to the left. My stamp faces right and I can't seem to find Is it worth anythin? When is Big Time Rush going to sign autographs in IL? What is the value of a 1960 un bolivar coin? Where can you buy a cheap but good scooter? What is a Texas statehood 3 cent stamp worth? What is the age of 30 06 enfield rifle serial number 1243057? What is the value of a signed Phil Rizzuto baseball bat? One cent Canada 1970 with a pig on back value? What is the value of a 1955 Eastern Group British Caribbean Territories coin? How valuable is Victorian jewelry gilt?