Watch List notes:

Netherlands, Spanish, Flanders, Philip IV (1621-65), AR Ducaton, 1651, bust right, rev. crowned shield supported by lions, 32.29g (KM 50; Dav. 4457), wreck coinage, cleaned, light horn silver in parts, good fine.
Provenance:
Recovered from the Dutch East Indiaman "Meresteijn", which ran aground off the coast of South Africa in 1702.
Certificate from the finders included
Estimate: £40 - £50