18ct, 18K or 750 parts per 1000 is 75% gold. Most quality pieces are 18ct. Minimum gold standard for sale in Italy.
Possibly vintage jewelry hallmarks. The description is vague. A photo is requested. Please type "Is this a Russian Hallmark?" in the subject field so that we can assign it to your original question here.
Due to the number of hallmark questions we receive priority is given to antique hallmark questions.
