The floor tom is the real story with this set. I don't know the history concerning this set first hand, so I am going to put forth a guess as to why the floor tom is a matching Slingerland made Leedy drum. We all know that Bud Slingerland bought Leedy from Conn at the same time William F. Ludwig bought the Ludwig brand from Conn. This was in the mid 1950s. I believe someone had purchased this Leedy and Ludwig set in 1954 as a three piece set. That was not uncommon at all in those days. He later went back to the music store, maybe in 1956 and asked if he could purchase a matching floor tom for his set. By this time Slingerland was able to fill the order for the store to sell to the customer.