Original 1st printing (circa 1961) 3&7/8 x 2&1/4" membership card for the Mouse! Monster Club, the fan club of Detroit's own Stanley Mouse.
  
Art by (and SIGNED in black flair pen by the aforementioned Mr. (Stanley) Mouse), thick index card stock membership card is in fantasic uncirculated mint/near mint to near mint (A/A- to A-) condition; a BEAUTIFULLY-preserved artifact from Stanley's pre-psychedelic hot-rod days.

 AWESOME art/design on this one!