Changed my brake master cylinder today and just as I was re-fitting the seats I found this on the mat....it looks like high tensile ( and that worries me... ) but maybe too modern for a MM ?
Anyone any ideas?

- 2019_0703X0001.JPG (427.58 KiB) Viewed 603 times

- 2019_0703X0002.JPG (381.33 KiB) Viewed 603 times

- 2019_0703X0003.JPG (418.94 KiB) Viewed 603 times
Thanks
John
