Just a normal 1990 circulation strike cent from the Philadelphia mint. The valuable no S would have to have come from a proof set.
It’s a very nice coin, definitely a keeper but not worth the cost of slabbing. HOWEVER, if you could get it to straight grade at NGC, THEY list one going for $10.00@MS65. Do you think it has that high a grade potential?...Spark
Compare your coin to this 1990 no S proof. These coins only came in proof sets, the number of them is very small, someone would have had to crack it out and spend it.