Made of solid sterling silver, as can be seen with the marks, which I believe are for Lithuanian silver, though I am not 100% sure. This is a stunning quality set of 2 solid silver serving spoons.
Pair Stieff Sterling Silver Serving Spoons ROSE Pattern
Nice Cased Set 4 Victorian Solid Sterling Silver Serving Spoons, Sheffield, 1900
Pair Cased Sterling Silver Serving Spoons Cased, Josiah Williams & Co 1913
pair of Victorian sterling silver serving spoons Richard Britton London 1839
Pair Cased Antique Sterling Silver Serving Spoons, Isaac Ellis & Sons 1910
UNUSUAL PAIR OF ANTIQUE EDWARDIAN STERLING SILVER SERVING SPOONS IN CASE 1903