Do I Have An Repunched Mint Mark / RPM ? 1984's Cents.

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Author	Replies: 7 / Views: 1,173
Helps New Member 12 Posts	Posted 06/02/2015 11:47 am I am not sure if I am getting the right definition of RPM's. If they are RPM's would you look here... Report this Post to the Staff

mdpmedia Pillar of the Community United States 3546 Posts	Posted 06/02/2015 12:47 pm Hello, Because of the inconsistency of some of the same sections on these photos I'll be unable to substantially opine with any degree of certainty unless clearer & less grainy closeup photos exist. A case in point would be the area directly on the base under the 'D' in photo 1 compared to this same section in photo 3. May I suggest attempting to dislodge of the remaining crud using an hour soak of 10% dish washing liquid/90% H2O followed by a rigid shaft(non-patina-damaging) porcupine quill which may at the least further elucidate the area(s) under investigation to a greater extent. mdpmedia Report this Post to the Staff
SilverStackerKid Pillar of the Community United States 6478 Posts	Posted 06/02/2015 3:14 pm Report this Post to the Staff
coop Bedrock of the Community United States 62064 Posts	Posted 06/02/2015 6:19 pm I would never use water on a coin. It can leave green spots on the surface of the coin. Report this Post to the Staff
cwb Pillar of the Community United States 3463 Posts	Posted 06/02/2015 7:10 pm I wouldn't think clean water would spot cents. Tap water runs through Copper pipes, the green on them is usually on the outside and due to acids or other corrosives in the air. Many times at joints in the pipe, it is caused from the plumber not rinsing away the flux used to clean the pipe before soldering. Copper tubing is purer than cents though, so Coop may have a point, he usually does. Report this Post to the Staff
koinpro Pillar of the Community United States 1781 Posts	Posted 06/02/2015 8:51 pm I use soap and water when I absolutely have to but I make sure that the coin is riced well and patted dry and left to sit flipping it over a few times to make sure it is 100% dry before packaging it up or putting it back in a tube. I have no problems with this approach and saved a few coins that would have just got worse. But, this is after 55 years of collecting and I ruined a lot of coins in my "youth" so I suggest that those new to coins not touch them at all and let a professional do the job only when absolutely necessary. So I'm not misunderstood, 40 years, 50 years, 55 years does not make on a professional at "cleaning" a coin. Lots of old-timers ruin coins! Edited by koinpro 06/02/2015 8:52 pm Report this Post to the Staff
CoinMasters Pillar of the Community United States 5964 Posts	Posted 06/02/2015 11:46 pm Helps, welcome to the Forum, a great place to learn. a RPM is just that, a repunched mintmark. It was puched into the die more than once and appears on your coin as "overlapping". In this case however, to me it looks like MD. Your camera picked it up on one photo and not the other because the lense was at a slightly different angle to the coin. If it were legit, this wouldn't be as big a problem. I don't think cleaning makes any difference on this coin, but with good coins it should only be as absolutely necessary. It reduces the value. Even just "wiping" is bad, it leaves microscopic scratches that are unable to hide from the camera or a loupe. Also, only hold a coin by the edges, as the oils in your fingers can damage it. Better luck to you on your next coin. I assume no liability for the content of this post as the statements expressed here-in are only my opinions. lol Edited by CoinMasters 06/02/2015 11:59 pm Report this Post to the Staff
mdpmedia Pillar of the Community United States 3546 Posts	Posted 06/03/2015 04:59 am Quote: ...never use water on a coin In retrospect I would have to agree with coop from the standpoint of the spotting. Distilled H20 would be the lesser of two evils compared to tap water, the later of which is typically not softened and notorious for its deleterious effects within home water piping systems. 'Non-softened' tap water contains Ca (calcium) and/or Mg (magnesium) components which inevitably accrue in piping interior walls over time and likewise would be one of the suspect residual components for spotting on coins. Right or wrong I routinely would have never suggested anything but residue-free acetone as the primary cleaner of choice if it had been an extremely high dollar MS-type modern coin or an ultra-rare classic coin, for example etc. mdpmedia Report this Post to the Staff
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Do I Have An RPM? 1984's Cents.