Is this an error

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Still learning things, just wondering if this would be considered an error with the '20' transferred to the back of this one.

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Hi! It is a very light offset printing. Is the 20 the only thing thats showing? or are there ink transfers elsewhere on the note?

Yes, from the photo shown, this would be a very minor error

Only the '20' is showing.

I’ve seen lots of twenties with a light “20” transferred to the back and the position is almost always on the opposite side of the twenty on the front (almost like your seeing through the paper). This is only the third one I’ve seen where the transfer is shifted to another position. 

Because it’s so faint it’s hard to tell but I thing the green marks running along the side of the shifting windowed thread, is a very light transfer of the words “BANK OF CANADA BANQUE DU CANADA”.  If it is the transfer of the “20” was put there by one note of the next sheet and the backward words put there from another adjacent note that was part of the same sheet.

Thanks for the feedback, its very interesting to learn about these things.  I've been a coin collector for a number of years, but I think you guys have converted me!

I suspect an error like this could be manufactured.  It depends on how unstable the inks are.  It may be possible to heat up a note with an iron, then press it against another note and have some of the ink transfer.  Anyone tried it?
M

I suspect an error like this could be manufactured.  It depends on how unstable the inks are.  It may be possible to heat up a note with an iron, then press it against another note and have some of the ink transfer.  Anyone tried it?
M

No I haven't tried this.

However I have seen this 'error' numerous times before. But with most errors, they are only valuable if they are very noticeable errors. Errors where you actually have to really LOOK to find out whats wrong will rarely fetch a large premium.

But hey..... if you like it and think its neat, then keep it =)

I suspect an error like this could be manufactured.  It depends on how unstable the inks are.  It may be possible to heat up a note with an iron, then press it against another note and have some of the ink transfer.  Anyone tried it?
M

Not with an Iron but i did read that their are special inks that once heated up to certain temperatures will turn back to it's liquid form so i threw a bunch of notes in the over to test it out.... but nothing. 

Not with an Iron but i did read that their are special inks that once heated up to certain temperatures will turn back to it's liquid form so i threw a bunch of notes in the over to test it out.... but nothing. 

Yeah, I read about it too 

Seriously, though, heat alone is probably not going to have the desired effect.  The hot steam of an iron could provide the moisture needed to cause the ink to swell and become adhesive.  Or so I've heard