For those who use microscopes for close examination for ID ing those paper types andf minute details,,
there is a new microscope.
deverloped by JARA-- Juelich Aachen Research Aliance.
through nanotechnology they came up with a MS with a resolution of 50 billionths of a centimetre.
Now that's takeing stamp identification to the extreme.Most likely you would be able to see the atoms that make up the paper and inks.
TOM