The picture below shows larger front and back views of this 1930s Cracker Jack Band Advertising Embossed TinToy Hummer Instrument. The tintoy was made by the Gray Stamp & Manufacturing Company. It is made of two joined halves and it is shaped like a flying saucer. This is Cracker Jack prize number z-0652. The two sides are marked as follows:
CRACKER JACK BAND HOLD LIPS LIGHTLY AND HUM
The tin prize measure about 1-11/16'' wide. It appears to be in good condition with wear as pictured.