Its listed as 50-5 at one source.
At the 35th annualGlden Gloves Natinal tournament.
In the quarterfinals,James J. Beattie defeated Ronnie Marsh by disicision 3 rounds.
Beattie then lost to Buster Mathis in the semi-finals of the
National Golden Gloves tournament in Chicago in 1962.
According to a newspaper article Beattie lost on a split discision
(by only half a point he would later claim).
However then Buster Mathis lost to Bennie Black in the finals who won the title.