A pair of Australia # 310 , Sir Charles Kingsford Smith and the Southern Cross , on this event cover for the 30th Anniversary of the First Australian Trans-Tasman Flight . Rubber Stamped - 30th Anniversary First Australia - New Zealand Flight September 1928 . Cancellation Sep 10 , 1958 , GPO Sydney , NSW Aust . Backstamped receiving cancellation Sep 11 , 1958 , Christchurch , NZ . WCS Cachet - The Southern Cross in flight over map , Sydney - Christchurch - Blenheim - Wellington - Auckland . Commemorating the 30th anniversary of the FIRST TASMAN AIR CROSSING by Sir Charles Kingford Smith , he arrived at Christchurch 11th September , 1928 and then visited the cities shown above , returning from Blenheim , 13th October . A month later , the cover was flown on a special flight - Postmarked Woodbourne Air Force , NZ , SPECIAL FLIGHT , Oct 14 , 1958 . Backstamped receiving cancellation Oct 14 , 1958 , Sydney , NSW Aust. Addressed To : Eugene Stanley , Philatelist , 29 Clarke St. , Elwood , S3 , Phone XA 2106 . F-VF , See Scans . $1.00 shipping & handling to a USA address / $2.00 shipping & handling elsewhere . Combine S/H - Add 25 cents more for each additional lot won . Personal Checks and Money Orders must be drawn on a US bank . Please view my other listings . Thank You . APS # 196666