Midcentury bamboo folding chairs

A set of 4 bamboo framed waxed canvas midcentury folding chairs. One chair has an ever so slightly different frame featuring the full circumference of the bamboo for the arm rather than flattening off on the underneath like the other three. There are lite marks and coloured age to the canvas but being waxed canvas there is no major stains. There is a small loss of stitching to the back of one chair (see photo) but this does not seem to be affecting the chair and is still ready for general use. H 85 seat h 43 arm h 60 w 62 d 56 cm. Folded h 89 d 15 cm.