Talk to Stachenscarfen
Look at the shaking barrel on the left to find a hint coin
Investigate the sign for the Heart Locket Charm(Mobile HD version only)
Check out the yellow vase in the rightmost windowand the barrel down the side street for more hint coins
Talk to IngridPuzzle 003


Hint 1

Hint 2

Hint 3

Solution

Hat A has the same brim length and heightProgress
35 Picarats and 13 Hint Coins002 The Crank and Slot