this is an: 1839-O F-109 (R6) " Lapped Die, Stars 1-3 Weak / Small O, Rev 1840-O "
http://www.seateddimevarieties.com/date ... 09page.htm
Gerry's quote from the comments section: ...."More difficult is Varieties 107 and 109, which is the pairing of the 1839-O Huge O lapped obverse die with two different Small O reverse dies. The first pairing is with Small O Reverse B and should command a very significant premium if available. The final pairing of the Huge O obverse with a second Small O Reverse G is also very rare at this time with two examples extant.".... link: http://www.seateddimevarieties.com/date ... arpage.htm
so even if this coin of mine, looks like it's been through a war or something like that, it may be only the 3rd example known(?).
1856-O - Variety 103 - Obverse 1.3: Medium Level Date, Die Cracks Star 6 Through Star 11, Clashed Die ... Reverse C: Medium O, [mm Lt,C], Die Crack From Right Lower Wreath To Rim
http://www.seateddimevarieties.com/date ... 03page.htm
http://www.seateddimevarieties.com/date ... arpage.htm
quoting Gerry: "Obverse 1 has been polished or lapped". Gerry gives this die pair a rarity estimate of R7 for VF-Mint State grades (edit/update 5/25/2018: according to Gerry's Obverse & Reverse Die Gallery with Rarity Rating page for this die pair:: http://www.seateddimevarieties.com/pictorial/1856o.htm - it's a Rarity: R5+. so since rarity estimates tend to go lower over time and not higher, R5+ is probably more accurate). i estimate my new find & purchase to be ~F12. the "1" in my coin's date is very much disappearing. (edit) i forgot to mention: the dies used on my coin were slightly rotated. i rotated my obverse to compensate for this when i took my pics. i took my pics through a flip fwiw.