HONG KONG (1970) Osaka Expo*. FDC with cachet and First Day thematic cancelation. Scott Nos 255-6.
AVAILABLE AT $5
BELGIUM (1951) Relay racers*. First Day Cover with cachet for 25th anniversary of Brussels Fair. Scott No B482, Yvert No 829.
AVAILABLE AT $25
SWITZERLAND (1980) Various expos. Registered FDC with cachet and First Day cancel. Scott Nos 681-4.
AVAILABLE AT $5