Can someone with a 1995 catalogue tell me whether this souvenir sheet was issued without what appears to be an overprint for a Hong Kong stamp exhibition? I assume it was issued separately from the exhibition as well, but I've not seen an un-overprinted copy.
This souvenir sheet, as far as I know, contains the only stamp ever issued showing the Handley-Page HP.52 medium bomber, which was one of the very few bombers capable of attacking Germany when the Second World War started.
