MOSCOW.- Art of the Danish Golden Age has in recent years been the subject of several major exhibitions abroad. Last year it was the national galleries in England and Scotland that marked the 200th anniversary of the birth of Christen Købke with a retrospective exhibition of the artist’s work mounted in collaboration with the National Gallery of Denmark. Now the Russian public is being given the chance of a more comprehensive introduction to this flourishing period during which Danish art acquired a character of its own. Especially Thorvaldsen is a figure familiar to Russian art history. Among other things, he made a statue of Czar Alexander I and was commissioned to create various sculptures and portraits of Russian princes and counts. The Pushkin Museum in Moscow itself possesses a sculpture of Princess