The Steel Cents can look like they are plated and odd depending on wear. Below are 3 coins from the 3 different mints. The San Fran minted cent has a little rust that does look a bit like cooper. yours should weigh about 2.7g.
Hi I hope you get this I time . In my opinion ( & I have studied many pennies & I agree it looks like copper has been added to the penny or something (not rust) it's to distinct & it's pretty much the same on both sides I would take it to a Prof. coin place it wouldn't hurt. Good Luck
Quote: I have studied many pennies & I agree it looks like copper has been added to the penny or something (not rust) it's to distinct & it's pretty much the same on both sides
Added copper? No, this is a simple case of RUST. I am certain there are many here that can show you various stages of what a rusty steel cent looks like. It is a very common issue with these, do to poor storage (moisture).