Apollo 16 Charles M. Duke, Jr. SIGNED AUTOGRAPH Space Photograph !!

Description

SPACE:
Found this in an olde time dealer collection.  Unfortunately, there is no COA (Certificate of Authenticity).  I am not an expert in this area.  I have taken a quick internet search for possible similar authentic signatures and autopens.  I did not see a clear autopen match.  This could be an authentic signature.  However, I cannot guarantee this signature is authentic.  What do you think?
Measures approx 8 x 10 inches including the white border.  Condition is Good for the period (scanner slightly darker than actual).  Shipped in new archival quality transparent sheet protector, archival quality backing boards, flat stiff envelope, with Tracking.     Buyer to pay for Shipping and Handling.  I will of course combine multiple winning bids, within 4-days, for reduced incremental Shipping and Handling.  Paypal only please.
Combined Shipping + Handling savings on buys made within 4-days. Shopping Cart will quickly get timed-out. When buys are complete, please send me a note that you are ready for the combined invoice. Or, if no note to me, I will send you a combined invoice after open bids timed-out. My listings have varying weights, automated eBay combined S+H will not work. After the highest price S+H item, I guarantee minimum 40% USA (25% International) S+H discount on incremental purchases. Thanks!  Note: I have Covers listings all over eBay and my store: TEXBCS  Please be sure to check my Sellers "See Other Items" listings, purchase many, and get your best shipping rates :)
Thanks and Enjoy!  Barry