"Bob Dylan has signed this U.S. customs declaration card on the back with a full name 'Robert Dylan' signature in black liquid ink roller pen. FULL NAME signatures are extremely scarce. This piece stand out amongst other Dylan items because he has also handwritten his name on the front, which many consider to be a second signature. The customs card is dated October 18, 1991." (eBay seller)
Bob Dylan's address in Malibu is noted on the form.
Scroll down to see the Letter of Authenticity stating that "the inscription was penned in an unknown hand".
Customs declaration, front and back: Thank you to Jürgen Wasser for having found this item on eBay.
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