Large Royal Mail George VI wall post box

Very large and very heavy Royal mail post box, George the sixth. It's all there and in nice solid condition. Only issue is there is no lock to the back door, it's a fairly common cupboard lock size though so a modern replacement should be easily sourced. It has the original Chubb front door lock and one key. Tab holder isn't shown in the photos but it's there. This box was originally in Wales, it's a rare and unusual size, especially taking into account the age.
It's approx 120cms high including the frame and probably about 50cms wide and 50cms deep.
It could probably be put on and shipped via a pallet, otherwise it would take about 4 people to move it so please take the weight into account.