Hi Ken. Attached is a rotated reverse census. Click on the Census Page Link at the bottom. It indicates that the rarity of the 1807 in various rotated reverses is R-1, which means there are more than 1000 possible. But the person does not identify his/ herself so I cant say it is accurate. If it is, my gut feeling is that you would not get too much of a premium for it. Any other thoughts?