Five-piece tin litho toy w/built-in key has overall size of 5.5x8.5x9" tall. 1930s. Marx produced three different versions of this toy and these are described on pages 572-573 of O'Brien's Collecting Toys 11th edition price guide. This is variety produced without a marquee and mice band members are piano player, drummer, dancer and conductor w/baton. The piano unit is nicely detailed w/images of mice on all sides, the pianist and drummer's chairs have images of cats as does the drum head. Toy works and features great action w/all four of the mice moving as if playing instruments and dancing. Drum head has lt. trace of paint wear from cleaning o/w toy has just tiny scattered paint nicks and scratches. Overall appearance remains totally bright and glossy. Still an Exc. example.