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1. Re: Guess the grade of this PCGS graded 1964 proof Kennedy.

   

   Comment by Russ · January 21, 2007 9:13AM · Home› U.S. Coin Forum

   << <i>Are these something more insidious than the usual "milk spots" that people talk about? >> Nope. In fact, this is a classic example of the milk spots that are frequently discussed. The 1964 proof Kennedys have a real problem with them. Unless one does a quick surface stabilization dip right after pulling one from a…

2. Re: Guess the grade of this PCGS graded 1964 proof Kennedy.

   

   Comment by jmski52 · January 22, 2007 4:17AM · Home› U.S. Coin Forum

   Nope. In fact, this is a classic example of the milk spots that are frequently discussed. The 1964 proof Kennedys have a real problem with them. Unless one does a quick surface stabilization dip right after pulling one from a proof set, some examples will develop these spots. Ok, what are the contaminants causing the milk…

3. Re: Guess the grade of this PCGS graded 1964 proof Kennedy.

   

   Comment by nankraut · January 21, 2007 6:21AM · Home› U.S. Coin Forum

   I'll guess PR-69, and the milk spots showed up after it was holdered.

4. Re: Guess the grade of this PCGS graded 1964 proof Kennedy.

   

   

   Comment by Russ · January 21, 2007 6:25AM · Home› U.S. Coin Forum

   << <i>I'll guess PR-69, and the milk spots showed up after it was holdered. >> Russ, NCNE

5. Re: Guess the grade of this PCGS graded 1964 proof Kennedy.

   

   Comment by Russ · January 22, 2007 4:23AM · Home› U.S. Coin Forum

   << <i>Ok, what are the contaminants causing the milk spots? >> Whatever the mint was using to rinse planchets at the time. << <i>And what does the surface stabilization dip consist of? >> Just a standard dip such as eZest. Russ, NCNE

6. Re: Guess the grade of this PCGS graded 1964 proof Kennedy.

   

   Comment by 2bucks · January 22, 2007 5:20AM · Home› U.S. Coin Forum

   << <i> << <i>Ok, what are the contaminants causing the milk spots? >> Whatever the mint was using to rinse planchets at the time. << <i>And what does the surface stabilization dip consist of? >> Just a standard dip such as eZest. Russ, NCNE >> Would MS70 work?

7. Re: Guess the grade of this PCGS graded 1964 proof Kennedy.

   

   Comment by planetsteve · January 21, 2007 9:09AM · Home› U.S. Coin Forum

   << <i> << <i>Can these kind of blemishes be removed by any kind of dipping? >> Nope. Once they appear, they are permanent. The contaminants that produce them are embedded in the planchet. Russ, NCNE >> It does look like these are coming out from within. Are these something more insidious than the usual "milk spots" that…