I sold two of these here last year, a 243 and 308.
https://www.24hourcampfire.com/ubbthreads/ubbthreads.php/topics/9677010/Re:_FS:_Tikka_Ithaca_LSA-55_De#Post9677010
They are beautiful rifles, but being a lefty they just didn't work for me. The tapered dovetail on top is the same as my Sako L579, right down to the recoil lug spot at the rear.