Thanks Pluck for that info and research
I am not done yet...
According to the data at the Ford Archives, A-54124 (quarter glass) has only two (2) drawing dates related to it. EI #10700 dated October 26, 1928 and EI #12977 dated June 19, 1929.
Now without actually viewing the Part Releases and Drawings could this be, if in fact it was, a change from flat glass to beveled glass or vis versa OR something different? Hmmmmmmmmmmmmmmmmm?????
The A-54120 (quarter light frame outside assembly) only has one (1) drawing date related to it. EI # 10700 October 26, 1928.
The A-54125 (quarter light frame inside assembly) has four (4) dates related to it.
Apparently there was a change right off the bat as there is a A-54125-A1 and A-54125-A2. Both have the EI # 10700 and a October 26, 1928 date.
Then there were two other changes associated with it. EI #12006 February 14, 1929 and EI # 12426 March 27, 1929.
Just what these changes are I have no idea...Again, the answers are at the Ford Archives.
The one date that all three of these parts have in common is October 26, 1928...So it is plausable that the oval window may have made its appearence sometime in November/December 1928...Maybe not.
Anyone can get this information off of the MAFFI website for almost any Model A Part.
Pluck