Watch List notes:

Porto, Portugal, 200 reis, Joao IV (1640-56), rare provenance. Gomes-29; KM-50. 5.99 grams. Nice full shield and cross despite corrosion all over, somewhat silvery from cleaning. The "Standing Cannon wreck" was brought to light in the Christie's (Amsterdam) auction of March 1983, described as "a large outwardbound Portuguese Eastindiaman... [whose] name derives from a large 10 foot cannon protruding through the sand bottom towards the sea surface... sunk... circa 1690 after colliding with a sperm whale, the remains of which were discovered under the hull and ballast pile." Pedigreed to the Charles Eidel collection (Sedwick Auction 20, with lot-tag 465), with certificate and Certi-Grade Certification Institute photo-card #01254. From: "Standing Cannon Wreck," sunk ca. 1690 off the Bay of All Saints, Brazil
($200-300)