Here is a 4.5" diameter aluminum tray probably a souvenir from Schloss Vaduz Liechtenstein; back side is marked SIGG Switzerland & SIGAL.  It is either a coin tray or a coaster.  In addition there is a 6" waved dish, possibly a souvenir from Neuchatel marked SIGG on the top; this candy? dish is highly polished and has a hanger on the back to allow hanging on a wall.