This is a set of 3 vintage nickel plated soldered tin cookie cutters in the shapes of card suits, a heart, club and spade from the 1950s.

Don't know where the diamond is. 

The cookie cutter measures 2.25 inches high by 2 inches wide by 1 inch thick and are very good +++ used vintage condition with great patina and very minor plating loss or signs of use.