P,D, or S minted Cents from 1968 in circulation grade are just worth .01 Cents to my knowledge.
Copper hunters will save these though, for that
reason, but that's it......nothing to do with the "year" of 1968.
They're NOT old.
There's NO low mintage here.
No errors or varieties for this year I believe.
The last "Wheat" Cent was in 1958, and even it isn't worth much.
The "circulated" 1968 is just a plain old ordinary Lincoln Memorial Cent.
Having one "slabbed" could/would be worth more......but I highly doubt it'd be worth it to send one off for grading/slabbing.
I would say, just to enjoy your shiny looking 1968 LMC, and get an album or folder to put it in
......then start collecting all of the different mints and years
. and stick em' in their corresponding holes.Then
you'll be having a "Lincoln Cent" collection before you know it ! ...
...(and you won't need those glass jars anymore !) ...
(Most every bookstore sells coin albums and folders for collectors....other coin supplies too)
Start fillin' those holes Bruhda ! ......