In MARC they are judged alongside the fine point cars in original class. They use the same set of standards as fine point and take note of the condition of each part as that it is 100 years old. There is also a Roger Kauffman award selected by a group of judges that is awarded to the original...
According to the brown book landau irons were available as a dealer installed accessory for the 28, not factory installed. All 29s had the oval window.
I have a early 1931 160c that was restored to fine point standards (body 70) and a late 1931 165c that is all original survivor. they are only 3980 engine numbers apart built January 27th and 28th. there is a factory photo of a 160c dated the first of march.
I have looked at this car online as well, hard to tell for sure from those pictures. I have an original car and this one if original is a bit nicer. It doesnt state if it has been repainted but that stripe is an incorrect color. A closer look at the construction and materials of the interior...