Hello, casselo and Puzzler!
This is a cool duplex, made just for fun.
The USPS issued the rose stamp in 2004. See the denomination 37c and the inscription USA, both in green, in the upper-left corner of the rose stamp.
I could show you an image, but I am not allowed here to post "external links"...
The collector has created a sticker/label/Cinderella/"tab", with his own portrait photo (probably), and with a blank space onto which he affixed the real stamp (the rose stamp).
The real stamp got postmarked, and the label got other postmarks, in the process.
A nit-picky postal worker could have objected to the fact that the real stamp is entirely onto a label, not directly on the envelope.
Anyway, the point is that enough postage was presented and canceled, and the rest is just a harmless embellishment.
