I believe it's a spearhead in the reverse right. At left looks like a sloppy rendition of a caduceus over a monogram.
Perhaps a Colophon mint issue, 323-319 BC, like the one below? (The spearhead is hard to see on the linked example due to wear, but it's in the description):
http://coinproject.com/coin_detail.php?coin=298521
http://www.coinproject.com/siteimag...2-1757-r.jpg
http://www.noble.com.au/auctions/lot/?id=28698
Perhaps a Colophon mint issue, 323-319 BC, like the one below? (The spearhead is hard to see on the linked example due to wear, but it's in the description):
http://coinproject.com/coin_detail.php?coin=298521
http://www.coinproject.com/siteimag...2-1757-r.jpg
http://www.noble.com.au/auctions/lot/?id=28698























