Just cut open a Puro Classic L14476. It was installed November of 2013, and removed yesterday. Date code on the can F11D06E1. Seam in the media was crimped with a metal strip. But there was nothing to see, so no pictures. I've cut open one filter each of three different Purolator filters stock numbers (1-PL25288, 1-QS3614, and this one), each has been fine.