Thank you Jeta.
Yes it has the center brace made out of glass on the top. It is definitely an aquarium. I felt and looked along all the seals and didn't see any sort of flaws, it was all pretty think rubber seals still. It was previously installed inside a man's bedroom in the wall above his bed and was used as a turtle tank. So the tank did indeed hold water. It was cleaned out and had been sitting outside for a couple months. I got it home tonight and gave it a thorough cleaning and filled it all the way up. It's currently sitting in the garage. No leaks as of yet!!
P.S.. The guy selling it was a new owner of the house and just wanted to get rid of the tanks because he had no use for them. He removed them from the wall in the bedroom when he moved in. He sold it to me for $100 including glass tops. Man what a steal!
125g Cichlid tank