Wenger does not exist anymore. Victorinox kept the brand alive in the recent years, but from now on, no more Wenger knives are produced. The stores here in Switzerland still sell what the have on stock, but they cannot reorder anymore. Victorinox took over some of the succesful designs of Wenger (with minor modifications). However, now there's the Victorinox logo on the knives.
So, keep your Wengers!
So, keep your Wengers!