@AGHRMatt posted:Beautiful coach. Were the prototypes wood or iron/steel-framed?
I'm not entirely sure; Strasburg's equipment roster has it listed as being built in 1910, I believe that at this point in time, cars were being built with metal frames but don't quote me on that. (I'm assuming by frame you mean just the 'floor/base' of the car, I know that the internal bracings on the cars are wood). Hopefully someone with more knowledge can add to my answer. The prototypes are definitely wood from the frame up though.