Jusqu-a Airmail Markings- A Study Ian Mcqueen [work] (90% DELUXE)

However, planes frequently flew only to regional hubs or continental coastlines. If a passenger or postal patron in London addressed a letter to a remote village in the interior of Australia, an airplane might only carry that letter jusqu'à (as far as) Karachi or Singapore. The Universal Postal Union (UPU) Mandate

The French postal system was the most prolific user of the literal "Jusqu'à" handstamp. McQueen details how French exchange offices processed mail originating from Great Britain and the Americas destined for the French colonies in Africa and Asia.

McQueen's book is highly prized for its deep dives into rare, specific postal anomalies. Several areas of his study are particularly vital for modern aerophilatelists: Jusqu-a Airmail Markings- A Study Ian McQueen

McQueen clarified a distinction that catalogs often blur. A marking saying "Via Cairo" means "send this through Cairo." "Jusqu’a Cairo" means "airmail stops IN Cairo." His study provides the only definitive guide to distinguishing these operational instructions.

His study broke down Jusqu’à indicators into three primary visual categories: However, planes frequently flew only to regional hubs

While not a price list, McQueen’s scarcity ratings (Rare, Very Scarce, Common) are the basis for all modern pricing. A cover with a Jusqu’à Saigon marking (rated ‘Extremely Rare’ by McQueen) recently sold at a David Feldman auction for over €4,000. A common Jusqu’à Natal on a late 1930s cover might bring $150-$300.

McQueen categorized the markings not just by the text they contained, but by their physical characteristics and geographic origins. His study provides comprehensive listings of: McQueen details how French exchange offices processed mail

These markings protected postal revenue, cleared intermediate countries of delivery obligations via air, and explained to the recipient why their premium-priced letter arrived via a steamship or train. Ian McQueen’s Breakthrough Methodology

: Identifying which country or office applied specific strike-through bars.

Today, collecting Jusqu'a and early airmail covers is a highly respected and rewarding branch of aerophilately.