814064 & 813910
My notes show that I saw both of these cars two years ago with Mr. Lutziger.
It seems I oversimplified my description as to what we think we know about these two cars and some similar examples. I am editing a private listing of all the 814xxx chassis numbers and a few of the 8139xx chassis numbers to show clearly that these are two different series. The listing will arrive shortly via emails to each of you. The engine number pairings will seem like nonsense if you combine the two series and treat them as one. When separated and looked at as individual series, I believe the engine number pairings seem as if they "make sense".
Since there are almost no Alfa Romeo records remaining from the 1930's, we have to find other documentation to tell us what the original engine pairings are with certainty. When a car exists today and it has its original ID plate, we can pretend that we know the original pairing, subject to whatever uncertainty that may exist as to the originality of the ID plate. When we find a PRA record of a car being registered for the first time, and when that record reports the engine number, then we can be pretty certain we know the original pairing. When there is an importation record and/or an insurance document and/or a racing entry document from the early years of a car's life, and when that document shows the engine number as well as the chassis number, we can feel fairly comfortable that we know something about an historic pairing that may well be original.
I probably have additional info for both of you regarding one or both of these cars, but that will have to await my return home at the end of next week and a trip through my paper files as well as a visit to the scanner? Regardless, there will continue to be more to study!