Mike Auf der Heide
Sorry for the late response on this. Inspired by the same Barriger photo, I have modeled both of these ends on Shapeways. See:
Both of these ends fit the Intermountain USRA car. By the by the Hutchins end seems to be a replacement on the Monon cars since it only appears on a few cars.
Thanks for the info on the SOO variant!
Modeling Monon 1947