When I was searching for valuable penny’s on the internet I saw that a 1990 no S mint mark penny was valuable I remembered that I had seen some of those in my purse and searched through it to find them again and ended up finding 3 and so far haven’t been able to figure out if one of them was a S or P so I put them in tarnish remover to get a better look but I still can’t tell so plz give me your feedback on if it’s valuable or not.
They are all Philadelphia minted cents. I am not going to even touch the fact that you put tarnish remover on them. I will leave that to someone else.
None of them are S coins, all are P coins. Philly doesn't use a mint mark in cents (except once 2017). Once you have used tarnish remover, if any of these coins had value, they don't any more. S cents since 1975 are proof only coins. Your coins are normal business strike coins, not special collector proof coins. This is what a 1990 no S cent looks like, you can't find one in circulation.
None of them. Yours are all Philadelphia Cents. The only time Philadelphia used a P mintmark was 2 years ago in 2017.
Yeah I thought it was but I didn't remember, and I didn't feel like digging mine out or abusing Gizoogle. So I just edited it. I knew that it was the 225th anniv. and the 8 didn't look right. (1792)
I like your avatar - The Maroon Bells near Aspen, Colorado. Been there many a time when I lived in Denver.
Yes there's not many things that you can use, unless you are very knowledgeable about what you are doing it's best to use nothing. Not even mild soap and water. I wash up my metal detecting finds, but almost all of it is face value stuff. Coins have a surface which can be scrubbed away with harsh detergents and solvents and scrubbers, it can never be returned and will be permanently harmed. Often, when this layer is taken off, a shiny underneath layer is exposed and people who don't know any better thinks it looks good all shiny and new. But it is now permanently damaged. Your coins aren't worth anything so it was a free lesson.