The model is not prototypically correct, since it represents a carriage from the B4iph/s 3100 serie, but the model is built using a "3200" type body, which is one meter shorter.

Also the bogies are from the "1908" type, whereas the real prototype had the "1912" type installed.

The original model from Stängl, before its merge with Halling and Ferro-Train, was properly built using a "3100" body and "1912" bogies, however such model is rare (even more outside Austria), and expensive nowadays.

Despite not being 100% prototypically correct, the Halling model was purrchased new from their shop with a 50% discounted price, for less than a Roco carriage, and it is beautiful.

More info on this topic are also available on the Schmalspur-Modell-Forum