Its normal,the years you should be looking for are 1992,1998,1999 and 2000,1992 for the cam and the others for wams.Im not seeing any true doubling on your coin.(doubled die is the appropriate term it can't be a over mint mark or anything related. Because the mint marks were not hand punched into the die anymore starting 1989.This is probably whats happening to the mint mark.zinc rot is common on these since they switched the metals in 1982-to today from copper to a zinc plated substance.
As stated earlier, yes it is a CAM, but it is normal for 1994. Go to lincolncentresource.com for comprehensive info on all things Lincoln. You can also get the info from a Yeoman Red Book… In the future, please orient your coins so we can see them normally. TY.