Royal Horse Drawn Carriage - Toy or Something Else?

I've updated pictures and measurements now that I have begun to put coach back together. Have pretty much ruled out toy, salesman sample or patent model. It has been suggested it may be a 1930-48 entry into Fisher Body Craftsman Guild carriage competition. I was confused in that it seems to be at least in part commercially made rather than completely hand made by a teenager but turns out you could buy a kit with intricate parts already made. Most of the metal fittings appear to be made out of brass but some are cast aluminum. Hardware is small, slotted screws/bolts with square nuts and brass brads. Wood seems similar to mahogany but probably isn't. Carriage itself is roughly 20" long by 9" wide by 10" high with a wood rail for attaching horses extending another 10". Front wheels are 4" high and rear wheels are 5" high. UPDATE - IT'S AN UNFINISHED FISHER BODY CRAFTSMAN GUILD CARRIAGE KIT.