Mine of the same model, but the snap-on edition says,
1670BLKSO
KAI Patented
MADE IN USA
Interesting it's just a misprint. BTW: I see so many people with this knife now it's ridiculous. Just a count, how many people here own a Kershaw 1670BLK in any configuration?
*Raises Hand*
I've got one too, was depressed to see it at a gun show for half the price I picked mine up for.
And its marked
1670TBLKST
(Rectangle) Patented
MADE IN USA
MAR 07 is printed next to the handle on the blade.