1861 3 Cent Silver Has Obverse Shield Behind III On Reverse Of Coin?

Nice die clash!

Ah thank you! I was thinking I struck error gold, alas no.

Nice clash - and yes common for the series. Nice photo representation Yokozuna! If you don't know what a die clash is, I see lots of comments that this coin has it, but no explanation of what it exactly it is.

A die clash is a type of error coin that occurs when two coin dies, the obverse and reverse dies come together without a coin between them.
this can leave an impression of each die (one or both) on the other die, which in turn leaves a bit of the other sides design impressed onto coins struck from that point on. When they are discovered by mint employees the dies are usually pulled from service and polished if the clash is not too severe, then replaced back into rotation. Repeated clashing can cause other errors to appear, such as die cracks/breaks as the die fails, Cuds, (chunks of the die that fail and fall out), and shattered dies, usually leading to a replacement of the offending die.

Some series are known for heavy die clashing, Three Cent Nickel and silver coins, Shield nickels, Two Cent coins, Indian Head cents, Morgan dollars, are all series that have quite a few well known issues with die clashing, though they can happen on any coin.

There are even off denomination clashes known, a few are the Flying Eagle cent clashed with a Seated quarter and $20 double eagle, a Two Cent Piece clashed with an Indian Head cent come to mind, These had to be created on purpose through minting mischief as the dies of two different series of coins would never be used at the same time on the coining presses.

Good explanation by @westcoin.

Here is the website I couldn't remember I had wanted to share on clashed coinage:

https://www.maddieclashes.com/

Some great information and photos there.

Nice example!