Help to store coins so that white spots will not come on them

chvan

can any one suggest me how to store the coins so that white spots will not come on them.
I found spots on the Graded PCGS coins. I thought that the PCGS slabs are air thght, and no moisture can enter the slab.

FLBuffaloHunter

A high humidity enviorment seems to trigger the milk spots. Over 30% is not advised. I recommend storing your coins in a airtight container with silica gel and cross your fingers. Good advise from a conservation expert.-

http://www.pocketchangelottery.com/article96.htm

BlindedByEgo

Although I have a dirty mind and chuckled at the wording in the title, you ask a great question. Low humidity seems to be the key - intercept shields, dessicant and careful storage seem to help. PCGS slabs are not absolutely air tight, and I know that PCGS would themselves like to know how to prevent milk spots on Eagles.

MORGANHUNTER2

Is B.C. playin with M.L. again???

19Lyds

If the coins receive a light dipping prior to slabbing or storing you have a much better chance of avoiding milk spots. But you really need to be sure they are rinsed and dried thoroughly.

I live in Denver which has very low humidity and the milk spotting still occurs both in slabs and airtites! I believe that the rinse used by the US Mint has some type of reaction with the PCGS inserts and the airtite inserts! I'm not a chemist by any means but there appears to be a direct correlation.

tahoe98

<< <i>If the coins receive a light dipping prior to slabbing or storing you have a much better chance of avoiding milk spots. But you really need to be sure they are rinsed and dried thoroughly.

I live in Denver which has very low humidity and the milk spotting still occurs both in slabs and airtites! I believe that the rinse used by the US Mint has some type of reaction with the PCGS inserts and the airtite inserts! I'm not a chemist by any means but there appears to be a direct correlation. >>




but how is the spotting explained in the mint slabs?

19Lyds

I dont have a clue.