I was pretty surprised by the responses, because I would have said AU55 minimum (Sheldon). However, now I see that the UK and French systems don't have an AU category, so that makes more sense. (I literally learn something new every day on here.) I also meant to mention that the coin has great luster. It cartwheels very nicely and evenly.
Unfortunately, this coin was handled pretty roughly recently. At a minimum, it was dumped out of a bag into a tray, and then dumped back into a bag, transported home and dumped back out onto a table. I think all the shiny spots in the patina around the rim and the high points are due to that process.
Here is a full size link to the photo.