Is it bent as shown by the arrows in this photo?
I would have sent it back to the seller, Don't be frighted by the "sold as is" in the description... for one thing, he didn't disclose the flaw and was not shown in the photo... in-fact the close-up views don't show the flaw... as if they were deliberately cropped out.
But, be that as it is, you did the best thing to round it out, unfortunatly there is no easy way to polish without smoothing out some of the tool marks, or losing the gold plating, and to a lesser extent the etching.
But from what I can see it doesn't look all that bad... the pitting at the edge near the heel will need to be removed, if you hold the blade at about 45 degree angle (like sharpening a knife) and gently abrade away the edge until you get to bright steel then hone as normal she should have a good edge.
The first thing I do with any blade is wash with soap, water and an old toothbrush, you would be surprised how it looks when done. Don't forget to dry thoroughly with paper towel, or you may use a hair drier on low heat or one of those compressed air cans (dust buster) and blow away the moisture.