Recently while digging a hole for a new fence post I pulled out what looked like a flat brick . Turns out it was a axe ( hatchet) head that had at some point been buried . Handle was long gone apart from the rotted bit within the axe head and some type of grey acrylic which I drilled out . The head was also painted green as remnants of this was still visible, apart from a notch for pulling nails there were no makers marks . Just wondering how it’s not completely rusted away given the fact the house owner does not do diy or gardening and his dad ( previous owner) passed away many years ago . Was old steel really this good or is it likely to be not that old . It was about 10 “ down in between a couple of shrubs .. I’m currently cleaning it up and hope to restore it to a useable condition. Thanks for reading .