Thank you, Richard. I cannot answer that but I will say that the 6219 I have is one of the most popular cars sold in 1956 and is absolutely loaded, but with the regular trim of a 62 series. One wonders if the salesman got them in by looking at the cheaper model and then suggested addons. I do not know about the later years, but in the mid=50s the series 62 sedan had the short deck which might have had a greater appeal.