Worldwide, Airmail Covers & Etiquettes, 1930-1990. Collection of many hundreds of covers, including commercial and first flights, all bearing some sort of airmail etiquette, sorted into countries, the preponderance being more or less modern usages but some from the 1930's; also a stockbook stuffed with several 1000's of etiquettes; please inspect. Estimate  $200 - 300. $0