upon closer examination I think you have the N-17 die variety. the line in the interior of the lower half of the e in cent is my pickup point. that would be a tool mark from some sort of die adjustment/polishing. I'm not 100% on that attribution. I would need better pictures to confirm.
there arent really any rare varieties of 1852. the N-23 commands a 2-3X premium. there is the N-24, but thats a proof with 3 copies known and this coin is not that variety.