There is a lesson in this for all of us, to check the tyre out before purchase. Meaning have a good look at the inside of the tyre before they put it on a rim, as its easier to see any repairs, If there has been repairs then just check that they are in the flat treaded area and not in the side wall or the sholder of the tyre...
Side wall punctures are very dangerous to repair and are a no-no in the tyre industry...
Thanks for sharing Lee, it has enlighten myself and many others im sure...