These bags are from 1968 to 1980.
"If Edmond Goyard left his mark on the history of the brand by creating the Goyardine, his son Robert also created a new fabric: a four-shade-woven canvas. This canvas is used in bags designed for frequent air travel. Robert Goyard patented his new canvas on November 24, 1965, and described its design as Chevrons intertwined with linear stripes. This new canvas not only allows for a more modern look: for it is a woven canvas, it is also much softer than the historic Goyard canvas, thus making it possible to manufacture new products. In order to improve the solidity of the weaving, Robert Goyard altered the pattern in 1968, and came up with a totally updated version that is easily recognizable from the previous one, as it is much more even."