When did lamp shades appear?
To answer a very important historical question we should look into fashion.
What was the fashion of the day became their signature ''traditional'' dress code.
Tall male hats, specifically top hats and their extra-tall stovepipe variants, were predominantly in fashion during the 19th and early 20th centuries. Emerging in the 1790s, they defined the Victorian gentleman's wardrobe until the rise of more casual menswear after World War I
https://en.wikipedia.org/wiki/Top_hat
(yes, the SHOCK, I am recommending a wiki page- it is highly informative -- it has ample visual details).
Now THIS detail sorts out any dispute, it reflects a more accurate historical timeline for sure.
This matches their natal chart (1948) + decoded history.