[Mr70]

This is not entirely accurate.
You could have the square mesh,or Diamond mesh.They were both available back then.I have a Diamond mesh dated 1970 in the box,and Magazines that road tested cars back then clearly show Diamond mesh on some Muscle cars.
The repop square mesh has a "Glob" where the mesh cross sections meet,Originals are much more defined and clean.
Also the wording on the Original filters is different.The phrase began with "Best Way" and another without "Best Way".