■ What is meant by “shipwreck effect” on the label on a slabbed coin?
The coin description “shipwreck effect” is a polite way of saying a coin was recovered from salt water and was damaged by its watery environment. Such coins are often professionally restored prior to being offered for sale by treasure hunters and their agents.
■ Is there a policy third-party certification services follow if willing to slab a coin that has the shipwreck effect?
According to Numismatic Guaranty Company, “When recovered coins show no signs of having been immersedand the.