You are looking at a Russian German Imperial Champleve Spoon. Made in the early 1900's in Germany-Austria, and was exported and sold for Russian Imperial Market.
Stamped with silver German-Austrian standard stamp 880, and Russian Imperial Silver standard-- 84 "P.T." (Privoznoy Tovar). Imported from Germany to Russia, through St. Petersburg custom. Beautiful, rare, and original item. Size: 4 1/4 or 11.5 cm.