Here's all I know about Holy Freres from grivna1726, a fellow forum member and my hero for this tidbit of information...
"Holy Freres (i.e. "Holy Brothers") was a firm which was established in 1893 at St. Imier in Switzerland. The brothers, Franz Holy & Jules Holy directed it. They were watch-case manufacturers & diesinkers.
They eventually branched out into medal making. Forrer lists a number of medals and it appears the firm was most active in medal making from 1903-1911 (some medals are undated and might have been produced later)."
I like their medals so much that I am trying to compile a complete collection of all 50+ that they designed. Pretty much the impossible dream, but Rod and his dad have helped a LOT.