Coal-fired vertical boiler

A vertical coal-fired boiler, in good condition and complete with all fittings and grate. Single flue with cross-tubes. The only thing missing is a firehole door - the boiler has been used so must, at some stage, have had one - however there are no signs of hinges or other mounting points, I can only surmise it was a loose accessory.

Diameter 4 inches
Height 18 inches