Watch List notes:

Poland, Duchy of Warsaw, Friedrich August, Ducat, 3.50g, 1812, head right, rev. crowned shield in palms, i-b (for Jacob Benick) below (F.68; HCz.3469), extremely fine.
provenance
Purchased 17 March 1961, £18.10/-
Estimate: £2,000.00 - £3,000.00