Thanks for the point Pal!
As for the answer speed, no news here. I have about 8-10 hours in this one before it came up to the Pro level. This is a little below average, but not extraordinarily. Actually I wasn't 100% sure of this one, hence the question mark on my submission. Until the very last I had myself convinced that this was a US built Stoddard-Dayton. However one of my standard on-line tools is a website run by one of our fellow AutoPuzzlers (I'll PM you the URL on request) where I discovered a picture of the Orleans that is different, but quite similar to your puzzle picture. Coupled to one or two other common reference sites, and everything fell into place. So no real secrets here, just a lot of persistent research.
