Nichols and Stone windsor chairs

Hi!   I have a set of 4 Nichols and Stone bowback chairs that I'd like to get some information on.   The chairs have a pierced backsplat and back brace and are stamped on the bottom by the manufacturer and have the number 750 stamped on the bottom as well.   I can't find any information on them and Nichols and Stone have yet to get back to me.    I'm waiting on an appraisal from this site as well.   Can anyone help me with info?  Thanks!