VINTAGE 51 PIECE SET OF DAVCO SILVER FLATWARE IN CASE

THIS IS A VINTAGE 51 PICE SET OF DAVCO SILVER FLATWARE IN THE ORIGINAL CASE. I`M NOT SURE IF IT IS SILVERPLATE OR STERLING, IT SAYS ON THE PIECES DAVCO SILVER CHINA. I`M NOT SURE OF THE AGE EITHER. THE SET INCLUDES 12 TEASPOONS, 12 TABLESPOONS, 12 FORKS, 12 BUTTER KNIVES, 1 LARGE FORK & SPOON AND 1 DIPPER SPOON. THEY ARE UNUSED. SEE PHOTO