This example case-back with a representation of the Quadrature of the circle, with the letter «G» (God, Gnose or Geometry); bezel engraved with the Union Chain; hinged pendant with Masonic emblems. Blue enamel dial with white triangular centre and different Masonic silvered symbols in place of the numerals (working tools of the various degrees of Freemasonry), clockwise, the Eye of Providence with the letter “G” (God, Gnose or Geometry), Sun, Cube, Trowel, Level, a column of the Temple of Solomon with the letter “J” (Jachin), Square and Compass and Stone, a column of the Temple of Solomon with the letter “B” (Boaz), Triangular Level, Mallet and chisel, Ax, Crescent Moon, and, at the top, Skull; gilt “Sword” hands.