I'm confused by your answer to jaspersani - maybe others are too, so I'm asking about it.
"MNH" means "M-int" (unused) and "N-ever H-inged" (gum/glue is perfect - nobody's stuck it into an album with paper hinges attached to the back of the stamp).
So, this is unused (not postmarked) as you said, but, is the glue/gum also perfect?
It is not mint, if it was I would post it that way. It was taken off an envelope hence not postmarked. It has also never been hinged, so would it be UNPNH? Used Never Postmarked Never Hinged. :)