Eames Wire Chair help (link to pictures inside)  

I acquired a pair of Eames wire chairs recently though a public sale. The original owner claims they are real and picked them up from an authentic retailer- but as a collector i always have my doubts. They are on Eiffel bases with what i believe is nickel plated rubber dome tops gliders.
they also came with leather bikini which was a plus. Since i did some research and realized that the chrome option wasn't introduced until more recently I didn't think i would find a PAT. PEND stamp like i would on other more vintage wire chairs. I have no detached the base from the seat so I can't say I have fully inspected it. But the owner said he might of got it about 20 years ago? (so its pretty recent?)
2 pictures.
http://imgur.com/Jhk6iGc,ymBjKMa