Nice coin indeed! It's hard to estimate the grade, but I would say it's probably atleast MS-60, so long as there is no real wear on the surfaces.
From the photos that you posted, it seems like the '5' shows slight doubling. 2011 Charlton(vol. 1) is the best reference for these kinds of varieties because it has an extensive section at the end of the book devoted to large cents. Based on the double punched '5' on the page 298, it looks like the coin is priced at $800.00 in MS-60; although, there is no doubling of the knob, as mentioned in the description of the variety, so it's a hard to say what the book value for this particular variety should be. Also, it's really hard to say how much you would actually get if you tried to resell a coin like this in today's market.
From the photos that you posted, it seems like the '5' shows slight doubling. 2011 Charlton(vol. 1) is the best reference for these kinds of varieties because it has an extensive section at the end of the book devoted to large cents. Based on the double punched '5' on the page 298, it looks like the coin is priced at $800.00 in MS-60; although, there is no doubling of the knob, as mentioned in the description of the variety, so it's a hard to say what the book value for this particular variety should be. Also, it's really hard to say how much you would actually get if you tried to resell a coin like this in today's market.




















