It's a DS grade from 1912. It was 1921 when Ithaca came out with the Nitro Special, which was the box lock Lefever. Ithaca actually bought them in 1916 and assembled the remaining side lock stock from what I've read. I never cared much for the look of the Nitro Special, kind of clubby. I guess they were a pretty tough gun but very utilitarian.
I did read and saw a picture once of a box lock that Dan Lefever made. It was a beautiful gun. I'll have to look around to see if I can find that article.
Chronographs, bore scopes and pattern boards have broke a lot of hearts.
