The site coinflation.com shows the melt values of different coins. The copper in a 1982 penny is worth more two pennies. You can double your money by collecting copper pennies.

If you like talking economics with coins; you should have both some quarters and a silver dollar. The weight of four quarters is only about 90% of the weight (I forget the exact amount). This is because of a coinage act in the 1800s.

I looked at your SteemD account. You have only one post left and you will crash and burn.

https://steemd.com/@cryptocleanse

When you run out of resources, you have to wait until your RC regenerates.

Hmm, but you have four pages of activity, making me think you know a little bit more about this service than the single post in your profile indicates.