Jackie occasionally signed "Sincerely" in addition to "Best Wishes" during the 1940s. Kind of looks like a government postcard, but is not. Nice addition to collection of Jackie Robinson autographs.The item "Early Signed Jackie Robinson Index Card Autograph Best Wishes Sincerely JSA COA" is in sale since Wednesday, June 27, 2018. This item is in the category "Sports Mem, Cards & Fan Shop\Autographs-Original\Baseball-MLB\Other Autographed MLB Items". The seller is "dembums42" and is located in White Plains, New York. This item can be shipped to United States.