The Strauss Silver Co., Inc., maker and importer of Dutch silver, 315 Fifth Ave., announced last week that it has established an uptown show room with John M. Boyajian & Co., at 50 W. 47th St. This concern carries a complete line of silver birds, animals, knights and dishes for the Strauss firm. Mrs. M. H. Strauss, treasurer and European buyer of the concern, has just returned from abroad with new items which have been placed on display at the concern’s own show rooms, 315 Fifth Ave., and at 50 W. 47th St.