I was doing Belgium last night and came across this stamp.
Nothing to write home about, I know, it's the 3f bistre-brown, issued in 1951 as part of a definitive set depicting King Leopold III. But then I came acros this stamp.
It's an awfully torn copy, I know, but look at the colour. It's bright orange! And it is not mentioned in any of the catalogues I have (Stanley Gibbons and Michel). There is no mention whatsoever of shades and the colour is so bright that I don't think it's a faded or sun-coloured bistre-brown stamp.
Any ideas what it could be? Does maybe Scott or Yvert say anything about this? Let me know!