Even though they are somewhat hidden on this old, French tracing board, the triple-J are mentioned in the name of the degree: “Ecossais Parisien où Ecossais Trinaire, dit les trois J.J.J. où Maitre Ecossais”, or ‘Parisian Scot or Scots Trinary, known as the three J.J.J. or Scots Master’.
According to Mackey the triple J. are not only mentioned in the 32rd degree of the French collection of 81 degrees that were compressed to the Rite Moderne, but also in the 19th degree of Memphis Misraim. The characters refer to “the mutials of Jourdain, Jaho, Jachin”.
Undated document (but pre 1780) in the Bibliotheque Nationale de France FM4 (1044 A), digitally available