I have 1964 D Penny that isn't cooper and isn't 100% steel. It has a nickel or dime color with a very slight yellowish color that indicates a present of cooper but it sticks to a magnet. I haven't read about this rare Penny, did anyone ?
We will need a photo and weight...read this to learn how to post a photo. http://www.cointalk.org/forums/showthread.php?t=8566 There is a pretty large chance that its a fake--as 1964 Cents would NOT be steel....they are copper..---I guess it could be a offer metal error---but don't hold your breath. Speedy
If the attraction to a magnet is weak, it's probably nickel-plated. However, a weight and a photo are essential before we proceed any further.