I got this anvil for $250 at an auction, did I pay more than I should have? There are no numbers for the weight but it's approx 150 - 200 pounds. It looks like it has sher on the front of it but it has a letter or two missing. I don't have a photo of it but it has 1903 on the back of it. To piggy back off of that whats the best way to take care of it and get the rust off?