Upside-down coins

[Ennius]

I emailed this one to Cecil recently, but in case he doesn't answer it:

Why are the two sides of coins printed upside down, relative to each other? And, if there is, in fact, a reason, why aren't bills printed the same way?

[Jophiel]

You came by a few days too late for this one, I already asked. Check dow the list about a week or so, or wait for a more generous soul to post the link.

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"I guess it is possible for one person to make a difference, although most of the time they probably shouldn't."

[sly]

You rang......

http://www.straightdope.com/ubb/Forum3/HTML/002033.html