Greece 20 Lepta - 1912 PATTERN

PATTERN coin by CH Pillet! Very similar design as the business strike but note '925 (omega symbol)311' on the obverse rim. I'm not sure if it was struck in Sterling silver. Beautiful,...here the lighting flattened the surfaces, better in hand w/proof-like surfaces and light iridescence overall.
The engraver for this series of three is Charles Pillet (July 20, 1869), he was a French sculptor and engraver.
Born in Paris, Pillet was a pupil of Henri-Michel-Antoine Chapu and Jules-Clement Chaplain. He won the first Grand Prix de Rome engraving medals 1890. He became a member of the Society des Artistes Francais in 1898. The Louvre preserves a letter he wrote to Eugene Delacroix.