Is this a known error?

dixielandtreasures

Here's one that has me confused. Blew through a penny box and came across a 1982 large date 3.1g normal but the mint mark is off centered. New error?

emeraldATV

Here's the one your looking for.....1982 D small date (note the sexy #2 in the date) 3.1 copper cent. There are also some that the #8 font makes it a small date.
Here's the sexy #2 small date.
(what?)
This seems to be what your stating but not in a large date style.

lcutler

Not an error at all, at that time the mintmark was punched into each individual die by hand so placement can vary from die to die.

Greenstang

The D mint mark can be anywhere below the date and to the right of the bust to be acceptable.
There would be probably close to a million coins struck with the D in the same position as yours.

WAYNEAS

I go with @Greenstang and @lcut, it is a hand punched mintmark.
Wayne