Unlike Browning and others, Ruger doesn't do the "grade" variations. Some distributors and retailers have had non-cataloged models, some more recent ones would have different wood and a more polished finish. No "grade-___" models though. I do recall the a few that had floorplate engraving but can't recall if they had the Ruger eagle specifically. Could've been something added after leaving the factory also. There's also Baron Technology...