Heinrich Köhler 384 Auction – Day 2 Single Lots & Airmail and Zeppelin Mail – inclusive the collection of the Sieger family

1932, Olympic issue 3 c. purple and 5 c. blue, the unique large die proofs on India Paper, on sunken card with blue control numbers "334309" resp. "334410" and handstamp "FROM THE FRANKLIN D. ROOSEVELT COLLECTION::::" on reverse. Very fine. A highlight of Olympic Philately. (Scott 718-19P1)