Luxurious chandelier made in the Stalinist Empire style. Manufacturing materials: brass, bronze, steel, bakelite, glass (glass or crystal - I can't judge). Since there is doubt, let it be glass. This, in my opinion, does not detract from the artistic value and historical value of this product. Unfortunately, no markings could be found. Internet searches have yielded no positive results. For the manufacturing date of the chandelier I took the year of production of one of the lampholders, which I had to repair after the purchase.