WERNHER VON BRAUN, hand-signed card - very rare For Sale

This is a 4x6" hand-signed card from WERNHER VON BRAUN, one of the great inventors of rocketry and the man who put Americans on the moon.
Very rare.Card has been in my personal collection for years and I'll be selling more from the collection in the coming months. All sales final.
About me: I am Steven Mueller, the author of the books 'Obersalzberg', 'Knights of the Deep'. and 'Aces of the Luftwaffe' (and six more). For decades I was also a member of the OdR (Assoc. of Knight's Cross winners in Germany, etc.)
P.S. Also, please check my other items. Thank you.