Could be from a different country? There are different color variations between US and overseas pins? His could have been on a route or such and dsuperbee a home unit? Where the first picture came from I don't know but if you follow the pictures on the thread the yellow faded version is on both sides. Just my .02 cents.
Would like to know what country it is from? I have seen a pin from England and heard of one from France and Germany.