Note that where the matrix number is usually shown on the label, what appears here is the 45 RPM catalogue number. The 78 matrix numbers are simply 20-3741A and B.
At the time of this release, both 45 and 78 releases showed each catalogue number. It wasn't until summer 1951 that RCA Victor began incorporating actual serial numbers (starting, at that point, with E1VB- ) into label copy.