According to the Professor's 1974 book, he is a sixth Dan Black belt in karate, a 1st Dan in judo. The sixth Dan may have come from a cross-certification of some sorts or a body of karate that recognized the Professor as a sixth Dan, this is similar to how Wally Jay obtained his 10th. "Remy's association with Arnis experts and other renowned athletes in the different parts of the country sharpened his ability in sports." (Page 67). He also founded National Amateur Karate Organization, this implies either he really did have high rank or at least recognized at such. For starting this org, he may have been awarded this rank or received maybe even an honorary level promotion.
His arnis teachers, at least in Cebu, were Rodolfo Moncal, Timoteo Marranga, and Venancio Bacon. The professor suggests these teachers taught him arnis and balintawak style of fencing.
This information comes from Col. Arsenio de Borja (ret) from the 1974 book of Professor Presas.
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