New Guinea 48-51 Blks of 4 MNH 1937 KGVI Coronation (ak5166)
Vietnam 1L2 issued without gum 1945 overprint (an3268)
Hungary CB26a MNH 1967 strip of 4; been folded (an4624)
Spain 3179 MNH 2002 issue (ak7461)