A founders hoard comprising of an axe head in very good condition, a casting jet and 11 pieces of bronze cake extremely corroded, with a total  weight of 3.78 kg. The hoard was in situe except one piece of cake about 50m away. The axe was  on top of the pile and has minor plough damage, how much longer would it have survived?

A few more bits found from other parts of the farm.