I found this beast yesterday in upstate New York . it is clearly a Thomas with the blue jean seam in the inner skirt. I would guess it is in the 1907-1909 era of production. I have not seen one of these before in any collections. There are still a few in service on a very early steel tower line north of Albany, n.y. ... It's dimensions are 15.5-7-10-8x14.5 . I still need to finish repairing the crown .