Vintage Hamilton 14k Yellow Gold Masterpiece Thinomatic. The caseback is engraved "PG E QUARTER CENTURY CLUB LIONEL L. DELUCCHI 1971 HAMILTON 14K GOLD 956167". This Hamilton has a 14k yellow gold case measuring 34mm in diameter. Featuring a silver case with arrow head yellow gold hour markers and dolphin hands. Total weight : 21.4g. Condition: (Very Good).