I hope this is the correct place to post this ? Well I found a 1988 Denver cent that looks to be a RPM ,but I'm not sure . Would like to hear what everyone thinks. Thanks
Okay. Would you have any information on a site about plate doubling ? I would like to check it out and find the differences on that type. Thanks
Split plating is very common on zincolns .. 1982 to current. it's basically when the 8 micron thin copper plating is stretched and tears. Of course it can stretch (and not tear) too which makes it a "ghosting" of the element which is usually on the "outside" of the metal flow away from the element to the edge. When it tears you can see the whitish zinc core underneath it. ==>http://www.error-ref.com/split-plate-doubling/ ==> http://www.error-ref.com/split-plate-doubling/
Also, I think it was 1989 when they stopped hand stamping the mint mark on cents (stopped on other denominations before that). So when they hand stamped the mint mark many times the depth of the stamp was too much for the thin copper plating. So it would tear all the time. So you can have zincolns where only the mint mark has split plating.
