1938 Austrian Anschluss referendum ballot. Available in "brand-new" and "aged" versions.
 
History:
The referendum on the Anschluss with Germany was held in German-occupied Austria on 10 April 1938 with German troops occupying Austria for a month (since 12 March 1938). The official result was reported as 99.73% in favour, with a 99.71% turnout. Both amazing!