Watch List notes:

Overijssel, Spanish Netherlands, ducat, Philip II, no date (1590-3), mounted in 18K gold pendant-bezel with seven small diamonds and a cabochon sapphire. Fr-262. 16.54 grams total. XF with full inner details (facing portraits / Habsburg arms) and legends (imitative of earlier "excelente" issues of Ferdinand-Isabel), substantial double-ring mounting, very impressive.
($1000-1500)