Actually, the US Treasury has for several years now been attempting
to have Congress banish the penny, as it now costs some $0.016
cents to make one, but of course the Congress will never do that.
Imagine the press.
We did it here, no 1 cent, or 2 cent piece... every thing is rounded
to the nearest 5 cents, in day to day transactions. Online it doesn't
matter, you could possibly pay with 1/2 cents online... wouldn't
that be a nightmare.
When the coins were phased out is sort of caused a problem for a
traditional gifting superstition.
You're supposed to give a copper coin to the person you're giving a
knife to so you wont cut the friendship. If you're selling a knife
this is not a problem, as money changes hands.
Regards Charles A.