...and not get caught. Of course, the more you make, the more your chances of getting caught increase.
My father once showed me a bendable fake quarter (obviously lead) that I assume he got as change. I would guess it was between 1966 and 1972. I was very young, so I didn't really check it out. $0.25 in the 1960s was like $2.50 today, so counterfeit quarters might have been worth making. Around 1909, quarters were much more worth counterfeiting. $0.25 in 1909 was like $25 today -- 25 cents would buy a steak dinner. Of course people receiving a quarter in 1909 would look a little closer, much like a store checks a $20 bill today.
Not lead, but includes lead, it was called "white metal" it's lead and tin, it's sort of a low grade pewter with lead instead of antimony and copper. I'm sure the kid probably did use lead though to make his own. Anyways I'm sure this coin is made out of some sort of solder or babbit metal. something that will liquefy around 450F. they can make a mold of the coin pretty easily, them melt in the oven to just liquid enough and pour it pretty easily. probably just a kid messing around. there used to be this product called Sculptmetal. it was liquid metal that would dry out and harden but still be pliable. I haven't seen it in years, it was like JB Weld, sort of, but much softer when it dried. someone messing around with an EasyMold silicone putty, and some thing like that is all it would take.
I have a US dime that looks exactly like this quarter. It looks like it was soaking in something for a long time, or perhaps what I would expect a coin to look like if I found it in dry sand near the beach.