Auction #1937 WORLDWIDE + ARGENTINA: special September auction

MIXED postage with rare CINDERELLA: Registered airmail official cover sent from Río Gallegos to Buenos Aires on 4/FE/1943, franked with OFFICIAL stamp 25c. Plowman (paying the surface rate) and definitive stamps for 45c. paying the airmail surcharge. It also bears an interesting cinderella: "Utilice la vía aérea para toda correspondencia con esta Gobernación", VF quality!