In 1899 at the Art & Crafts exhibition in London Charles Rennie Mackintosh showed the Argyle Carver Armchair. It was also exhibited at the Vienna Secession in 1900 and was acquired by Koloman Moser. In both these cases a circular pewter plaque designed by Mackintosh's wife, Margaret, was inserted in the oval backrail. This version is without an inserted panel as is in the Glasgow School of Art Collection.This armchair is constructed of ashwood with fabric or leather upholstered seat cushion. 

Beyond Mackintosh's influence in the area of furniture, he also had a large influence on architecture, textiles, metalwork and interior design.  Much like the American Frank Lloyd Wright, Mackintosh's designs went beyond the architecture of a building, and included specific details and furnishings of the building.  Though many of his designs gained popularity around the turn of the 20^th century, it should be recognized that much of the designers acclaim came after his death in 1928.