Watch List notes:

Poland, Sigismund III Vasa (1587-163), Ducat, 3.47g, 1592, Marienburg mint, .sigismvn. iii. d:g. (shield) .rex. po. m.d.l., crowned and cuirassed bust right, rev. (ring) .mone. no. avr. regni. poloni. 9z. ., crowned shield (F.55; HCz.559 - R6), possibly from a mount, very fine, very rare.
provenance
Purchased 4 May 1967, £44.1/-
Estimate: £3,000.00 - £5,000.00