I've seen lots of U.S. notes listed with smears but this is the first Canadian one I've come across. Not an error! Read the later posts!
Is it actually a printing error? Something from those tiny maple leafs in the bit "10" numeral plate run? Looks a bit like gunk from circulation.
Forgive the pics....all of a sudden my scanner refuses to scan banknotes! Anyway here are a couple of close-ups of where the black seems to originate (use the "enlarge" function, these are huge pics:
Are the inks on this series of Canadian notes vinyl based or pigmented-plastics based? It sort of looks like the ink began to dissolve from contact with a chemical agent that it came in contact with in circulation.
Krispy, why do I doubt you? Having been questioned on it by you and on another forum, I decided to try a technique I heard about for determining whether notes had been tampered with. My camera (a Sony Cybershot) has a nightvision setting (basically infrared). So I re-shot the note and here is the result: Obviously a foreign substance. I've just learned a new way of examining banknotes! Thanks for calling me on it!
Incredible! You just taught me a new technique too! Very clever for filtering the light in a different way! I wonder if you can back light the note and also shoot in night mode.
I guess it just looked like accumulated junk on the note to me. It didn't really have any of the patterns dragged from the design on the plate nor resulting from a problem printing plate.
I'll dig out my light table tonight a play with a few different notes. It'll be interesting to see what happens with different denominations and foreign notes. I'll start a new thread on the results.
I think it will be very educational for CT to see your experiments. I'm glad you will create a new thread to discuss this topic/technique. :thumb: