I like tongue-in-cheek's mysteries.. I like to play the guess what game..
and now it is my turn.. This is the first time I saw it.. and would never guess .. such a simple design.. creating such a nostalging feeling.. this is the inside.. and parts of a music instrument.. guess which one.. I know I know the photos are blurred.. but I only had my phone camera when this happened.. so use your imagination to sharpen them =))..