6. Hard Stone and Guilloché Enamel Dress Cane -1907 -Plain Lapis Lazuli ball knob of most unusual and highly decorative striped structure and its wide silver, guilloché and deep blue enameled collar on an ebony shaft with horn ferrule. Clear London hallmarks 1907 beside a “HP&S” mars for Henry Perkins & Sons add to the cane’s desirability. Intact. -H. 3 ½” x 2”, O.L. 39 ½” -$1,200-$1,600 -Engine turning, also often called guilloché like in the French language, is done with a machine called a rose engine or decoration lathe, which cuts grooves in geometric patterns. It was used to adorn the cases of pocket watches and other small items and also to engrave printing plates for stock and bond certificates. Because the pattern is engraved, the reflection of light is enhanced, and its brilliance can be seen as the piece is moved from side to side. The best-known artist, but not the first using this technique, was Fabergé, who, when showing pieces in Paris in 1900, brought a new interest to this practical method. Engine turning is very delicate and requires sophisticated equipment and high skill; it was developed in the 18th century and died out after WWI.