I have a bicentennial dollar with no mint marks on it. I will upload…

I think this is the once you called a "bicentennial Eisenhower dollar with no mint mark and type 2 lettering." Forgive me for being the bearer of not such great news: most nonsilver proof and mint sets from the 1970s and later are worth not much more than face value. Many were set aside in their original government shipping boxes. Most dealers I know don't even pay attention to the abundance of modern "varieties" talked about all over the Internet because in practice they are tricky to identify and don't fetch the supposed premiums people claim. We purchase them using the dealer "Gray Sheet" as our reference. If you think you have a Type 2 you can verify this by getting the coin certified--a process that costs about twice as much as the premium commanded by the Type 2 designation. I hope that helps!