Cleaning Pennies

I recently received a couple of penny books for collecting pennies. Pennies aren't good for a whole lot else these days, so I dug out my jar of change (there weren't a ton of pennies as we have pretty much stopped paying cash for things these days and spent our change stash on a penny war fundraiser at husband's work a few years back). They were mostly pretty dirty, and I didn't want to put them in the book that way, so I set out to clean and sort my penny stash. I thought some of you might be interested in how I did it. First I poured the whole jar of pennies into a cereal bowl and covered it with vinegar . Then I added some salt to the top. The pennies changed color instantly. It's awfully satisfying. Since I had them all stacked on top of each other, I knew they wouldn't all be clean, so I swished them around and rinsed them off in clean water. It's important to rinse the pennies because the salt and vinegar will lead to oxidation if left an...