USB MIcroscope - Images of fake overprints
Sir F. A. Rien wrote :
Another trick is to use a 20x loop and a light source coming across,
not down, on the stamp. With anything but a good cancel, you can pick
up the OP ink resting -=on- the cancel.
For GB material, only 1 in 10 is genuine !
Ah ah !!
Quite interesting :-)
May be, I have to search within my GB stamps for those with overprints
and faint cancels.
Then look at them with my USB microscope and a light source coming from
the side (if I understood correctly your explanation).
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Kind regards,
Pierre Courtiade
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