Hi Amac,
Forget about it. It has been proven not to be a D over S a long time ago. In the hobby the word we use is "debunked". It has been taken off the overmintmark list.
from the
Lincoln Cent Resource website:
"1980 D/S cent Debunked July, 2006
The 1980 D/S omm 1 was debunked in 2006. Die Variety News had an article proving that what looked
like an S was actually die gouges in the field. The article was Vol. No 2. July/Aug 2006 written by Billy
Crawford. Also, ANACS no longer certifies this variety. Some collectors and dealers are not aware of
this. Investing in this variety is not recommened."
From the 2006 Errorscope review, this is from CONECA:
"August 13, 2006 -- It is the nature of error/variety research to occasionally deliver disappointing news. Such is the case in this issue where the debunking of the 1980-D/S dual mintmark Lincoln cent variety takes center stage. An early-middle die state specimen clearly shows that the supposed S-mintmark is a degraded remnant of a formerly more extensive area of die damage."
http://www.coppercoins.com/diesearch.phpHe also notes that this is not an overmintmark.
Thanks,
Bill