Really not sure where I got this axe, but have had it for awhile. Just getting ready to re-handle it and noticed something about the eye. Stamped COLLINS and part of a silver sticker you can make out COLLINS AXE. Note in the photo, the top part of the eye, approximately 1/2 inch is recessed. Why & what for? Anything else you can tell me about this axe head will be appreciated. Thanks!
http://s19.postimg.org/3ukobi3er/Collins_Ax2.jpg
http://s19.postimg.org/irt5cign7/Collins_Ax3.jpg
http://s19.postimg.org/3ukobi3er/Collins_Ax2.jpg
http://s19.postimg.org/irt5cign7/Collins_Ax3.jpg