With a bit of LUCK!
He kept it in a shiny case. Otto thought that meant it was valuable or something. The 'something' was that maybe Sokol was some kinda king of superstitious nuts. That gave Otto the creeps, no doubt about it.
It was a glass-encased four-leafed-clover. Otto wanted nothing more than to:
Give the whole place a health inspection!
Turn up the music, baby!