The date can be restored, however the coin will be damaged or "details" in
TPG lingo. White vinegar soaking or nic-a-date (commercial liquid available at some coin shops and online). Can't really hurt this coin, with the scratches and green gunk on it. Might be worth a shot, this is the ind of coin to experiment with.
"Buy the Book Before You Buy the Coin" - Aaron R. Feldman - "And read it" - Me 2013!
ANA Life Member #3288 in good standing since 1981, ANS, Early American Coppers Member (EAC), Colonial Coin Collectors Club member (C4), Conder Token Collector Club member (CTCC), Civil War Token Society (CWTS) member, Liberty Seated Collectors Club (LSCC) & Numismatic Bibliomania Society member (NBS), USMex, Member in good standing, 2¢ variety collector.
See my want page:
http://goccf.com/t/140440