Hi dshi111,
Welcome to TOC.
In those days the term still applied to printing presses.
Logos, letters, and other trim, were "one off" designs that were changed from year to year and from application to application. Since each was already associated with a year and model, there was never any reason to give them names.
Download
this pdf catalog. Check pages 7 and 8.
Norm
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Harry S. Truman wrote:
When you have an efficient government, you have a dictatorship.