Spectacular, aged conferral letter from Heinrich Himmler awarding Heydrich with SS-Honor Ring. Filled out on a period SS type-writer on heavily aged paper.
Can optionally come to you with:
color photograph signed "Heil Hitler! Reinhard Heydrich", or
postcard (available also separately here)
Letter correctly dated 24 December 1933, when Heyrdich received the honor. 
 
For more material dedicated to Heydrich, please see Heydrich Collection.