one coin looks interesting with the 84. i noticed there are mint errors with an extra " bar" under the L, what about if it is missing half? the 1994 has a shadow of the letters on top? any help and advice is greatly appreciated.
Check this site. It should help you determine what you have. http://www.errorvariety.com/OFD/index.html
Check "Plating Split Doubling" on this site: http://koinpro.tripod.com/Articles/OtherFormsOfDoubling.htm