1976 Hitchcock Arm Chair "The Capitol"

I have a Original Hitchcock armchair with The Capitol stencil on the backplate and noted on the back.  It is from a friend's father's estate.  From my looking around on the internet I am perplexed to not find a match.  The closest I get is Mt Vernon.  It may be a limited edition or part of a bicentennial series.  It has some use wear on the end of the arms.