Uncommon 8x10-inch black and white glossy still, shown as Willis Jackson on T.V.'s popular sitcom "Diff'rent Strokes" (1978-1986), boldly signed in blue marker in-person at a recent film convention appearance.  The child actor's promising career came to a screeching halt  due to legal issues and bouts of drug abuse.  His autograph is rather elusive in any format.

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