I was given an old Japanese broad axe that was used by my landlord`s father (my landlord is 85,so I estimate the axe to be at least 100 years old).I cleaned the rust using boiling green tea and used it a little,but then the (equally old) handle snapped.I couldn`t remove the wood from the slot of the axe head,so stupidly I put the whole thing in a fire,to burn away the remains of the handle.I have basically annealled the head now (which had been in quite good condition,after having the rust cleaned off it).I`d appreciate any suggestions as to how to harden/temper the head again.
As to whether it would have been worth buying the axe,I don`t know (except for its beauty of course).