Since I cannot selectively protect my trademarks without it causing a potential issue, I'll get with our PTO lawyers and have them draft (or make a recommendation for) a quick temporary license allowing you to produce a Beck horn button using our enameled crests such as you have done with the P* crest badges.
I assume you used a 356A hood handle crest for th above P* horn buttons? if so, our crest is the same size...