King Super 20 #740338.  
Here we have a horn that, strictly speaking, shouldn't exist, because records for King Super 20 serial numbers ended after
540xxx in 1975. There are many possible explanations for this phenomenon, including that these uncharted horns were
assembled from the last few Super 20 parts after production had ceased. The Super 20 is well-loved by horn players for its
lush tone, and sturdy, "beefy" bodywork. Comes with a case.