It's a great date if genuine. Make sure to examine that date very closely against published pictures. If you're confident in the seller, it is certainly a worthwhile purchase at under US$30, though I suspect it would fetch more than that on
ebay.
But honestly a big chunk of the marketplace won't touch corroded copper, and for pretty good reason. I'd much rather have a slabbed G-06 1866
IHC than this coin.