I picked these up today. They are marked on the side at the slip joint with the Wilde logo and Wilde Wrench 8.
(https://lh4.googleusercontent.com/-bBRl7hS7hKo/Tle44muemMI/AAAAAAAAAEc/vXUUex2wF-A/s800/IMG_1538.JPG)
Dan
They are still making tools today and I got some of their tools at Epstiens. Nice stuff.
still made in Kanas.
http://wildetool.com/index.cfm