1911 Penny -Gold Infused Into The Back. Weight Is 3.18- Valuable?

to the funny farm!!

I'm going to guess that was mounted on something that just may have been painted with gold paint, or a metal object that had a gold wash on it. the substance is most likely a glue residue, notice how flat and even it is.

The substance isn't really "gold" or if it is, is a very low grade of jewelry gold (24k flake). It could be removed by a bath in pure acetone, but because of the sentiment, I'd just leave it alone. YOU know the Provence of the coin, that's what matters. It may not be a very valuable coin in that condition (unless it is a S Mint coin), but to you it's priceless!

PS: Show both sides of coins when you post, sometimes we spot things you don't!

Try to post the obverse (front) photo.

Looks like a gold colored film mostly flaked off already. The top right quadrant looks to be a gold colored film flaking/peeling off. I don't see evidence it was ever mounted as a piece of jewelry. There are what appear to be gouges in the coin surface in the top left quadrant.

Back in her day they used to take a jar and put something on the outside edge to cover the glass to make it look thicker. Let that dry and put on a second coat and put odds and ends to the outside of the jar. I know my grandmother had one. I remember an old rust pocket knife on it, buttons, coins or what every accumulated. Then they would use if as a vase for real flowers or artificial ones.