I don't know much about the 100mm grafting series from Wenger, but it looks new for 2010 and a possible product of there merger with Victorinox. This is their
Graft 03 model that features a Wharncliff style blade like some of the earlier Victorinox 100mm knives in there horticultural series. The scales appear to be plastic (not nylon). The rivets look like brass a bit in the photo, but look more silver colored or nickle/silver in person.