Great Britain. Gold Pattern Ducat, 1867. PCGS PF65

Great Britain. Gold Pattern Ducat, 1867. W&R-388 (R4); Murdock-517. 3.29g. Plain edge. By Leonard C. Wyon. Victoria, 1837-1901. Obv. Coroneted head left, VICTORIA D:G: BRITANNIAR: REG: F:D:, toothed border both sides. Reverse ; Struck en medaille, ONE DUCAT within oak wreath, ONE HUNDRED PENCE above, date below, rosette either side. Extremely Rare. Pop 1 ; The only Example graded at PCGS. PCGS graded Proof 65 Cameo. Estimated Value $7,500 - UP
"This very rare ducat was struck after the first International Monetary Conference, held in Paris in 1867. The initiative proposed at this assembly was the adoption of a single gold standard, decimalisation and overall international coordination of various currencies. Hence the present gold piece, bearing the dual denominations of 'DUCAT' and 'ONE HUNDRED PENCE', meeting all three of the Conference's criteria. Due to the difficulties concerned with the pegging of international currencies and the relative values of gold, these initiatives never entered circulation".
Ex Spink, London, May 5, 2005, lot 211.