Your Tag looks authentic and never removed. The stamping is a bit deeper set than on my 77 with similar type style and spacing. Repro’s are quite different.
Back to the topic of Paint-To-Sample….
I pulled up a Pantone color chart and found this…
https://www.pantone.com/connect/172-CP
A YouTuber posted a Porsche paint color info video, said Porsche would “consider” odd color scheme and the process wasn’t simply “paint mine ‘this’ color” because of their proprietary colors. Using a “Pantone color” would be plausible for Porsche but ‘172’ sure looks like a number of their common oranges incl Gulf 019 and Tangerine 018…and you’re seeing brown metallic (Btw, Porsche did the paint code conversion in 1972 switching from 4 digit to 3 digit codes.) The base coat on orange topcoat is yellow as on my PTS and is obvious in areas of the floor, dash, trunk and even on chips in the top coat or wear marks along some edges. My color is mostly original though.
You next clue will be pulling out one of the gauges or clock, under the carpet center tunnel, and if the repaint wasn’t through..under the glued down black vinyl door sill. Plenty of original color in these areas to compare with colors on the web. Take a look at my tunnel, note the yellow along side by shifter.
