Back in the late 1930's Gleaner had its own line of grain bins that they had Columbian build for them... That bin you made there should be almost identical. Gleaner called theirs "Green Top Bins", Columbian painted the roofs green from factory... Gleaner also had a line of little on farm grain mills they called "Gleaco" short for the Gleaner Baldwin Harvester Corporation as well as augers and all sorts of little stuff... Would be so sweet if you could make a Gleaner Green Top version of that bin!!! They had a 500 bushel and a 1000 bushel as you can see in the add... 