Hello Maria --
It would be WONDERFUL if you have a genuine 1852 US seated Liberty dollar coin. These coins are worth tens of thousands of US dollars. You have accurately described this coin when you filled out the CoinQuest questionnaire.
Unfortunately, with the advent of the modern era in China and other places around the globe, thousands of fake seated dollars have been manufactured and sold in the US and elsewhere. These counterfeit coins are worth zero.
Maria sent us the picture of her coin that shows here. It looks very compelling and could well be a genuine coin. The pattern of Miss Liberty and the Bald Eagle are about as close to perfect as you can see with the naked eye. This is not an obvious fake, if it is a fake at all.
There are two features of Maria's coin which make me think it is not genuine. The even brown color looks 'too even' to be real. Instead the wear and the color could have been applied artificially. Further, the side-by-side comparison of the date looks very unfavorable.
To be certain, Maria, you must send your coin to PCGS, a highly trusted certifier of rare and valuable coins. Look for them on the net. If PCGS says it's genuine, it's genuine, and you will have yourself a gold mine in rare coins. Hope so! But I seriously doubt it.