4 Vintage 1930s-1950's Dexterity Puzzles 2 1/4" Diameter Germany

This group of 4 vintage dexterity puzzles were made in Germany, some in the 1930's. They measure about 2 1/4" in diameter" and 3/8" or 1/2" tall. They have glass tops and metal frames. Two are marked "Made in Germany" and two are marked DRGM. The puzzles are: a man juggling balls, a smoker with a cigarette, a horseback rider and horse, and cat and mouse. They are in good condition with no breaks, no interior soiling, the glass is good and the colors still vibrant. The cat and mouse puzzle has glass that is a bit cloudy and the mouse is upside down, but it still works this way. I'm not certain how the horse and rider works or if it does. They are old and may not work that well.