Samoa Times Express Stamp

Genuine, apparently
Source

The Samoa Times Express stamps are one of the most valued items in classical philately - but it is also the most heavily reproduced and forged.

Sadly, most of the copies that you will come across are not originals although it is not at all easy to work out what it is exactly that you have - remainders, reprints, facsimiles, forgeries or, rarely, originals.