Here is a view from NASA as Mercury moves across the Sun. You would not have been able to see it because you would need special lens to look through to view the Sun. In addition, a special lens would have been needed since it was not visible with the naked eye. Click here to learn more about the the transit of Mercury across the Sun. This doesn’t happen often. The next time will be in 2032.
The photos below were taken by Mark A. Brown of Marion. The images show the Sun. Look at the top right hand side of the disk of the Sun, there is a little black dot, that is Mercury as it moved across the Sun. Click on the photo to enlarge it.