Unique Penny

Many variables can affect color: time, storage medium, heat, exposure to nearby chemicals or vapors, how the coins were wrapped, prior exposure to other materials such as wrappers, poly bags, etc.

For example, I have rolls of '68-S LMCs that are bright yellow on obverse and reverse and look like gold. I have other rolls of '65-P LMCs stored for decades in the same location that are nicely toned red on one side and bright orange red on the other. My only guess in the latter case is that they were stored in rolls in boxes on a hot garage floor and whichever side got the most heat, toned the brighter orange color.

Anyway, from what I've learned so far, it's a mixed bag and often difficult to pin down to just one causative agent or process.

Example:




The bottom one is picking up copper color from surrounding cents, it's rim is actually the same as it's face.

To look at it, it looks warn but up close it looks like a new penny very glossy and shiney. But shiney like brass or gold. does not look copper but I might be wrong

The shape and the rims are different this coin is rounded off toward the back of the coin there is no rim at all almost like a button

Do you know how I could find out ? I find good stuff but never know where to go to find out more about it. I more just collect and keep whatever I find that I find interesting

I would think that if there were damage but the coin is smooth and in excellent condition. Not too sure what made it this was but its unusually shiny thought id keep it anyway but hoping to find an answer thank you again

The obverse perimeter and Lincoln's bust appear to have been abraded and subsequently exposed to some substance that caused a yellowish discoloration.