Sanford02 wrote:Thanks for the replies so far.
So if I keep them all together, will the green gunk spread to the rest of the pennies over time?
Thanks.
From personal experience and speaking with my brother who has collected coins for more than 50 years, yes the verdigris (green stuff) will spread when it touches another coin.
At the coin show this past Saturday I had the opportunity to buy two rolls of 1955 wheats for 5 cents each. I knew they wouldn't be BU coins and wasn't expecting that for the price. These were circulated coins with varying degree of wear, etc. However, there were quite a few coins with the green verdigris on it and I kept the coins in the same order that they were in inside the wrapper and as I looked at each coin where one had been touching a coin covered in the nasty, green stuff the coin that had touched it was also beginning to grow some of the green stuff in the area where contact had occurred.
So, if you want nice shiny ones to stay that way, don't intermingle with nasty ones. ALSO, and this may not be as much of a concern today as it was in the past, but many of the much older coin paper wrappers had some sort of chemical reaction to the coins that caused them to become gross. Not the green stuff, but just didn't keep them nice and shiny although you could tell that the coins had been BU when they were originally put into the roll. Maybe it is something similar to in today's world being careful to only put photos, etc, near archival safe (acid free/lignin free) paper.
I've also heard to be careful allowing coins with different metal compositions from touching one another as there can sometimes be a reaction from the various metals.
So much to learn in this hobby. That's one of the reasons that makes it so much fun.
Enjoy your coin searches, everyone.