FS-101, CONECA DDO-001 (attributions not on the label). The classic late ‘50’s error/variety that launched a million pocket change searches.  In an older PCGS certification, solid for the grade with virtually no wear.  A bit darker due to having been lightly fingered, there are a few small marks under the toning, but nothing too serious for a coin that probably came out of a vending machine.  The classic tale of these is that many were distributed though cigarette vending machines as change tucked into the plastic wrapping. As the enlarged images show, some nice touches of color under proper lighting. The older holder does show some light surface scuffing, however no damage.

PCGS 2825.58/21079014