1924, 5¢ Huguenot-Walloon, plate block of 10, used with #568 block of four and pair, #622 block of our and #623 block of six, all tied by "Cleveland Ohio Aug 5" duplexed on large size Graf Zeppelin flown cover to Lakewood Oh., Fine. Scott No. 616  Estimate $100 - 150. $0 (Image)