Need Help Identifying 6 Pence Blue, Difficult To Read?

Forgive the awful photo, but I can't make out the printing on this even in real life, except for the 6p. Obviously commonwealth of some kind, but I don't even know if it is a postage stamp. It appears affixed to some kind of heavy stock, almost like a post card. It is almost as if the design was stamped into thick wet paper.

Any ideas?

I think it's an old Great Britain Revenue stamp. I have stumbled across some in the past and they were not very valuable, but you never know. Someone with a GB Specialized Catalogue can probably shed more light.

Thanks Mike, that's a start!

I believe it to be a blue paper stamp-duty stamp. I can see the Tudor Rose with "Honi Soit Qui Mal y Pense". A better scan or photo might assist ID. In theory, it could even be American as they were issued to the "colonies" for taxing any official document in the reigns of the Georges.
Worth further investigation...

Thanks Scotzm, I think you are correct. It looks like a tax stamp, except that the descriptions I read say the word "America" is on the stamp. Apparently these were only issued in 1775 and were much hated by the American colonists until repealed by British Parliament in 1776.

Still not sure if this is American though, or if there is any possibility it was used outside of the colonies, or if this is the 1775/6 version.

A better scan or photo might assist There's not much detail to see just now but I could just see the "Honi Soit" etc and a garter and Tudor Rose. Must be British in origin but date-wise might be tricky without further detail. Maybe a crown or letters or watermark to identify the reign for instance.

Yeah sorry I need to get me a scanner :(