The ships engaged engaged in transporting the gold coins featured in this story
generally travelled the routes shown on this Wikipdeia map above, as dictated by the
prevailing winds and ocean currents. Easterly winds are prevalent below the
thirtieth latitude, and westerly above it. Combined with Gulf Stream current, this
meant the most favorable routes for sailing ships laden with treasure
bound for Spain generally traveled just south of Florida, north up the Gulf
Stream and north of The Bahamas. Many were wrecked along the way. The return
trips were made south of the thirtieth latitude.
The coins featured in Sixth Coin were destined to be transported to Spain
along this Nothern route. However, the ship they were on was damaged in
an engagement with an English ship and it eventually sunk in very deep
water. Its resting place off Columbia, South America was only recently
discovered. The coins may have looked like the one shown below.