Very often not a lot can be determined on axe heads as, BUT, yours appears to be a trade axe, described here: Fur Trade Collectibles - The Spirit of the Old West - Hudson's Bay Company Collectibles, Trade Goods
And this is a good site showing various "touch marks" (makers marks); PAGE 9 BISCAYNE TRADE AXES - PART 2
Anyone?thanks guys. I found the exact one on that site and it says its a biscayne trade axe but it says it was made between 1575-1670. does that seem right? any idea if something like this has any value?