On our 1951 gmc 1/2 ton longbed, we have a set of fender emblems. They are rockets. We know Olds had rockets, but GMC's? I pulled them off today and the paint behind them is still the original color of the truck, while the rest of the body has faded badly. I can only assume it came this way or these were put on right after the truck was bought? Has anyone got any info on these emblems. They are made by EMPCO and were made in the USA. We cant find reference to these anywhere! HELP! Thanks gang.