SA Centenary
Issued 25.06.1982
Postmark: Brockville Stamp club
Cachet: Brockville (?)
Stamps: Single Stanley Gibbons 1046
Size: ?
Remark: Must be extremely RARE, not seen before!!! Listed on Ebay August 2020 – sold for CA$ 220. NB! This is a reference cover – not in my collection. Only the upper half of the cover was visible in the listing.