There was another Dragon Knights castle?! 1906 Majisto's Tower is one of those wonderfully terrible mid 90's sets that Lego threw together from over produced parts and seemingly only released in America (
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Majisto's Tower : Set 1906-1 | BrickLink
LEGO 1906 Castle Dragon Knights Majisto's Tower 100% Complete with Instructions :: - 비드바이코리아 - 해외 전문 경매대행 선두주자 - BIDBUY
LEGO 1906 Majisto's Tower Set Parts Inventory and Instructions - LEGO Reference Guide