Unlooped palstave, HAYLING ISLAND, Hampshire. 515 g  160 mm long 70mm cutting edge. C 1200 BC.
From a hoard found during groundworks.
Silicone moulds taken from the original, lost-wax investment.
This surely one of the boldest and most business-like of these Norman-Breton imports. They are found throughout Europe.
Practical palstaves do not get significantly bigger than this. 
The weight of the axe is most likely determined by limitations in the capacities of the smelting process rather than what weight of axe a Bronze Age person could wield.
The point of balance of the head is 70 mm back from the cutting edge, making this a powerful, weight-forward axe.
Given that everything about these axes was made by hand, the hafting ribs in the socket and the sgraffito lines of the hollow shield are something of a personal signature or trade mark of the mould maker, if not the smith himself.
The narrow, 20 mm square section neck would help chippings to clear from the cut.