THE PATTERN IS “IMPERIAL”. THE DATE “1990″ IS ON THE BACK OF THE PLATE. THIS PATTERN WAS ORIGINALLY DESIGNED FOR THE IMPERIAL HOTEL IN TOKYO, JAPAN. DESIGNED FOR THE IMPERIAL HOTEL IN TOKYO, JAPAN. THE BACK STAMP (UNDERSIDE OF THE PIECE) READS AS FOLLOWS: IMPERIAL, A DESIGN BY’FRANK LLOYD WRIGHT’, CERTIFIED BY THE FRANK LLOYD WRIGHT FOUNDATION FOR TIFFANY & CO. CONDITION: NO MISSING GOLD, NO CHIPS, NICKS, CRACKS, STAINS NOR REPAIRS. NEVER USED, STORED FOR ALL THESE DECADES. THE PLATE WEIGHS 10 OUNCES.