King John III Sobieski (1629 -1696)
In 1983, Canada was one of the nations that commemorated the 300th year anniversary of Sobieski's "Relief of Vienna". While commemorative stamps were issued by Austria and Poland, Canada Post authorized the use of a slogan cancellation coinciding with the POLCAPEX Philatelic Numismatic Exhibition held in New Westminster on September 12, 1983.
New Westminster, September 112, 1983
RELIEF OF VIENNA
KING JOHN III SOBIESKI
LIBERATION DE VIENNE
LE ROI JEAN III SOBIESKI
300 YEARS - 300 ANS