The Victor key was made by E.S. Greeley and Co. in late 1880 and later was manufactured by E.G.Tillotson and Co. and the Bunnell and Co. by 1920.
I got mine from a VE3 ham in 2005 and I bought three keys from him and I liked the Victor key best because it is easy and light for sending CW. The key is about 80 years old at least.
I use this key everyday and I love it.