floortrader if you think you have a stamp worth $10,000+, why don't you just send it for certification? Otherwise, your accusations that everyone (but yourself of course) is manipulating scan colors is a bit offputting to say the least. It's quite sad, but it looks like you're trying to fool yourself about your stamp, because no one else here sees anything but a normal issue 233. So why not just have it certified and prove everyone wrong?
Edit: for complete accuracy, here are the stamps from the Swedish Tiger Website - you posted the 233 and not the 233a ...

The image you posted as "233a" (compare the perforations)

You know, we have enough problems trying to convince new collectors that their stamps aren't "rare" - I guess I'm just surprised that an experienced collector would not be able to properly identify a stamp and would go to such lengths to try to prove to everyone that he owns a certain stamp. Like I said above, quite sad.