There were no steel or zinc cents struck in 1959. The fact that it's in AU condition indicates your cent has almost certainly been plated for use in jewelry or as part of a decoration. As such it's considered to be an altered coin and has no numismatic value.
A US steel Lincoln cent is 5 to 10 cents in average condition.
Stainless steel is tough and looks good
Condition N is a symbol for normalized steel. It is often used in sheet steel applications in the aircraft industry. It can be shipped rolled.
In average circulated condition only like 5-10 cents, if uncirculated perhaps 50 cents or more.
A 1951-D Lincoln Cent is a bronze alloy - a coin that was minted in this specific year is in fine condition, is worth: 5 cents.
Dead Mild And it looks like steel
0.5mm
A classic stainless steel Swiss army watch with black leather will vary in worth. It generally depends on the overall condition of the watch. If it's in near-perfect condition, you may be able to get at least $1,000 for it.
The 1943 steel Lincoln cents are not rare regardless of where they were struck.
Pennies that year were made of steel and coated in zinc. Ones in better condition are shiny and silvery in color, while more worn ones are a dull gray.
A 1943 steel penny is worth just that 1cent.
It wouldn't be lead - it would be made of steel coated with zinc. In circulated condition, it is probably worth 10 to 25 cents; in uncirculated, maybe a couple of dollars unless it is in truly exceptional condition.