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Mike HThis is not a glove that would have been used by professional players, rather highschoolers, town teams, etc.  
In my oppinion, mink oil is a no no.  Oils can add weight to leather, harden over time, and attract dirt.  Many glove collectors and dealers recommend Lexol (applied with a soft cloth or very soft bristle brush) to clean and pure Lanolin or Vasoline to condition after it has dried.