Another one all cased-up with a holster is TE # 6413...that one is on your and Reese' original list as well :
http://www.rockislandauction.com/vie...=39&iid=189584
The auction write-up on this one says "13" is on the left side of the TD lever. I assume in the commercial style as you cannot see it on the photo of the left side of the gun. Probably it lost its original with the "13" on the right side and someone "force matched" another TD lever (???).