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1. Re: ASE Spotting Detection - Any options?

   

   Comment by RogerB · September 6, 2018 9:22AM · Home› U.S. Coin Forum

   If OP wants to try optical detection, he will need a tuneable narrow band collimated light source used in a darkened room. The surface debris causing "milk spots" might fluoresce only at specific narrow wavelengths.

2. Re: ASE Spotting Detection - Any options?

   

   Comment by ricko · September 6, 2018 8:26AM · Home› U.S. Coin Forum

   Try UV light... sometimes it works....Though I would not use it as a reliable prediction tool. I think when it does work, the process is already beginning, but just not naked eye visible yet. If you have unspotted ASE's, I recommend an acetone bath. I honestly do not know if this is effective....However, years ago Russ…