Quote:
"... I assumed it wasn't a stamp ..."
Don't worry, Jamie; you're not the only one who thinks these are not really stamps

There are long-standing doctrinal disputes amongst collectors as to whether/not this-or-that item issued by this-or-that country is "truly" collectible.
This forum (thankfully) adheres to an inclusive "to each, his own" / "collect what you want" rule, so your Bhutanese "3D" stamp can be trash, or treasure, as you prefer.
Worse, yet, you could even change your mind, like, tamara.
Cheers,
/s/ ikeyPikey