Does this appear to be a 1956 D RPM#003 / WRPM-002?

[Guest]

D/D NORTH
AKA:
CONECA: RPM#003
Crawford: CRPM-002
Wexler: WRPM-002

[trails]

Yes it does. Soak that thing in some acetone.

BJ Neff

[minidisc0]

To clean it? Wouldn't that decrease the value?

[JeanK]

Whoa! I can barely see that rpm.
Good eye minidisc0!
If anything, not conserving (proper cleaning) the coin would likely cause the coin's early demise from all the dirt and corrosion.
JeanK

[kloccwork419]

Try VERDI-GONE..I bought some and it works GREAT!!!....You can use goo gone on that too
..
Its a great find..

[1sgret]

Nice find!

[trails]

An acetone treatment is not cleaning. There comes a time when you must look at a coin and figure out which is better; one with corrosion that will continue to harm the surface and eventually the whole coin or one that has had that corrosion removed.

I look at cleaning in this light; if "cleaning' is preformed on a coin to enhance the value in such away as to deceive others of its true condition, then it is wrong. If "cleaning" is applied to a coin to preserve the underlying condition, then it may be the correct option.

Example; you have an AU-50 Lincoln cent that has spot corrosion and grim embedded in some of the design elements. If removal of those imperfections will not raise the grade of the coin, then it should be done.

Now take the same coin in that AU-50 condition and you try to raise the grade to a MS-62 by "cleaning" it. That is where it is wrong.

Others may feel different about this approach, however, I feel that a good coin such as yours, deserves to be "cleaned" to preserve it appearance.

BJ Neff

[1sgret]

I totally agree with BJ.

I have done this for years, however I have never sold a coin that I have found in circulation, so they are still in my collection.

Alot of them went in for grading and not one showed cleaning or altering. Just the gunk/grit/grime was removed to preserve the surface of the coin.

To each his own decision as to what you opt to do. Still a very nice RPM.

[kloccwork419]

ORDER VERDI-GONE!!!!. IT works great on this type of corrosion..PLEASE TRUST me..here is a link with a few results. It will work by removing the corrosion and prserving the patina!!!!!!

http://www.coincommunity.com/forum/topic.asp?TOPIC_ID=33105

I ordered it and it works great!!!

[mustbebob]

I think 'patina' is not the correct wording for what we want to do. A patina is normally the green film or coating that forms over copper with age and environmental conditions.
What we want to do is preserve the 'color' of the coin. I know it's a technicality, but I think the correct terminology is in order here.

[kloccwork419]

When used as directed, it will generally maintain the original oxidized/organic patina of aged copper while removing the green/blue cupric compound (acetate, sulfate, carbonate) surface verdigris.

[CCC]

Nice find!

[minidisc0]

Thanks for the recommendations and advice. The coin isn't really in that bad of shape but at this close up it looks pretty nasty.

What is the best way to clean a coin with acetone? I've never heard of this before so i'd like to try on a test coin before doing on this RPM.

[CCC]

Go to Walmart and buy Goo Gone. Use a used toothbrush spray it on and gingerly bathe the coin using light strokes. I hope this helps.

[Brad]

They sell acetone at a hardware store. I would let it soak for about a minute, then check it. You can repeat the process as much as you want. Acetone is a natural solvent and will not harm metal. I would not scrub or brush it.