Design Query

To all mah design homies in da hood: ;D
My folks are having a yard sale this weekend, and they've got these two chairs that they know are from the 60's-70's, and that they think are by some famous designer or somesuch.  They'd like to know more about them, how much they might be worth, etc., but they have -no- idea who to talk to about it, you know?  So, I thought w/all the cool people I know, and their amazing differing knowledge bases, maybe somebody might be able to help 'em. :)  The chairs are brown leather, have matching footrests, and  are seated on a wood frame w/metal leg armatures like your classic office chair.  See da pic below for more detail, and lemme know if you have -any- info about these guys.. peeze?

Many Fanks,
Nae

For Those Pet Owners w/a Healthy Sense of Humor:

A fun way to give your furry friend the H2O he or she needs. ^_^