Puzzle No 47: The Terrace Door (US) or The Coded Door (UK) Professor Layton and the Spectres Call. Answer = Under the Crscent/Half Moon sign enter the Number 8, Below the Triangle sign enter the Number 6.
Puzzle No 134: Engine Parts, Professor Layton and the Spectre's Call. The Engine is constructed by building it with four parts on the bottom and a further two parts on the top. Please see the related link below.