I've read many threads on replicas of the 1944 steel cent, so I'm just going to first assume that I'm not holding a super rare coin. This coin is magnetic with an odd patina, but has a silver color on edges of coin and in somes breaks of the patina coloring. I'm stumped.
Standard question, how magnetic is it? Does it JUMP to the magnet from a half inch away and hold tight, or does a magnet just pick it up and it is easy to pull away.
If anything it has probably been dipped. Just weigh it. And you'll know. Like others said it probably is environmental toning.
Weight is .08 grams low for copper and .33 grams high for steel cent. If is tin plated it would attract to a magnet.
The fact it jumps to the magnet is a good indication. A plated cent would not jump. Sounds like it is worthy of more investigation. Next step would be either a specifiic gravity test or an XRF gun, preferably both. A replica is still a possibiity though. A tin plating would not be magnetic. A nickel plating would be, but a nickel plating would not make the cent jump. There just isn't normally enough material in a plating for the magnet to "grab" and pull that strongly.