I have a Columbus Depot Jacket for sale. It is somewhere between a 38" and 40"- I would be more comfortable to guess smaller than larger, but think it would fit a 40" chest just fine. I bought it off these forums a few years ago- I do not know maker, but can tell you that the materials and work are 1st rate with extensive hand sewing (cannot remember if it is completely hand sewn).
I have worn it for a couple of events, and there is some dirt, etc., on the lining. It's in great shape though, and looks just like what it is- a jacket that has seen the field.
Asking $120 ppd.
Money Orders or Paypal only. PM if interested.