The brass tag is a SCCS registration number. The number '14' is key to this as it is either the entry number of the car when first seen (less likely) or the 14th car to be registered (more likely). Either way, that's useful.
If it was the 14th car to be registered in 1972 then it must have been at Bogota, which means it must be the Bobby Brown B20-71-1 as that was the only B20 present. We need to find some entry lists for 1972 to see who ran as #14. I've checked but I have none for FB that season.
Allen
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