Lehigh Valley's Pullman-Bradley "A.F." 82 & 92-seat coaches.

Yes, Alexander made castings of the "AF" Osgood Bradleys, presumably based on the NYNH&H's plan. They can be finished into a respectable model with some work, though note the casting thickness does give the windows some excessive depth. I think they were produced in both bronze and white metal though I'm not 100% sure about that. The LV prototypes are very interesting  and I was thinking about bashing some Weaver shells to get there, but its way down on my project list. On a related note, Walthers created an ersatz kit version of the AF Osgood Bradley (catalog #4841S) which of course lack the curvature at the top and bottom of the sides. The split window sash provided is made from press cut cardboard. I have contemplated using these kits to create a simulate Lehigh Valley version , as the roof is not pre-tapered and has to be shaped accordingly for the NH, B&M, KCS, SAL or SLSW versions.

One other note about the Alexanders, I think they might be 17/64 as their original production, per the attached catalog page, is pre-WWII, again not 100% sure.

I am reasonably certain they are 17/64.

The Alexanders are cool. That answers the question about if O-scale AF's were ever made of aluminum. Will keep an eye out for a Walthers 4841s. Maybe I can get a custom extrusion using the Weaver profile.

Not a bad idea at all, especially if they can cut the window size correctly. If you're going to OK Models for those better hurry, I understand he's getting out of the business.

A fellow in the DC area around 1972  sand cast in brass/bronze NH Osgood-Bradley coach bodies using the original Alexander masters.  He was offering them under the Baldwin Model Locomotive Works brand.  They were extremely heavy and we jokingly referred to them as door stops.  As I recall he also had the masters for the B-lectric.