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<p>[QUOTE=&quot;physics-fan3.14, post: 3746057, member: 19165&quot;]&quot;Shipwreck effect&quot; is a fancy way of conning people out of money. What it really means is &quot;corroded and cleaned.&quot; Shipwreck effect coins have corroded over time in seawater, and will have rough, porous surfaces. On the coin I linked, look on the obverse around the date and on the bottom drapery. Notice how rough that looks? And look at the date itself - it should be smooth and lustrous, but it looks &quot;dimpled.&quot; The reverse is almost completely corroded, but you can easily see the roughness in the fields under the wing and around the mintmark. In hand, this coin would appear absolutely dreadful. This rough surface can resemble the porous &quot;bubbly&quot; look of the cast counterfeit in the OP.[/QUOTE]</p><p><br /></p>

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