There are State quarters struck on nickel planchets, and State Quarters struck with one outer layer missing, showing the copper core, but if I read your question correctly, you're asking if a normal sized Quarter planchet has been 100% nickel or copper - No. The most common 'all copper' or 'all nickel' coins are those that are copper plated, or nickel plated, as novelty items, that then get into circulation and confuse folks who think they might have found an error.
But I've seen some quarter errors with both sides missing nickel clad layers. Not normal size but isnt that technically 100% copper?
Did you find something that you have a question on? There is also Environmental Damage, that's when the clad layer changes color due to exposure to the elements. Dirt, sand, soil, water, sun, heat and weather can give it a darker appearance.
If both sides are missing roughly half the material is missing as well so if it was missing before the strike the strike would be very weak and the quarter would weigh about 2.8 to 3 grams.
No. not enviro. damage, all state Quarters 4 or 5, some years ago, all look good,out of the roll, not running 5.67g, some as low as 5.5 to 5.8? looking all copper or all nickel? I'll get picks but I need to dig them out first, not an error collector.
5.5 to 5.8 are all within spec for a normal quarter. Means almost certainly just toning/discoloration.
i am new here and i just wanted to ask if this 1961 jefferson nickel of mine is an error coin or something?