More assistance please friends.
In the Parts Catalogue for my 1948 3.5 MKIV it says that there is one part number for the Chrome Finishers on the Centre Pillar, BD.143. This is odd because there is a locating pin which is on the opposing side of the back of each original Finisher. This serves to locate them in the corresponding drilled hole in the Pillar. All the regular suppliers list just the one Part Number BD.143.
Earlier cars were listed as having an NS 1714/E & OS 1714/F which indicates a difference. It might well be that there were some earlier Finishers left over in a box so rather than waste them the Factory used them? Sigh!
Have others had a similar experience? It might also help others in the event that they encounter the same issue.
With my thanks as always,