Watch List notes:

Sweden (Avesta mint), copper 4 daler "plate money," probably Fredrik I (1720-51), date not visible.KM-PM74.1970 grams, 8-3/4" x 8-3/4".Corroded with rounded edges, two stamps faintly visible but one with clear denomination.With original (generic) certificate from the salvors.From: Nicobar, sunk in 1783 off South Africa
($200-300)