First off, yes I did a search, but could not find the info I was looking for. So now, please release a portion of the wisdom here on the HAMB.... I purchased these older tires...really nice, clean, no wear, no checkering...they appear to be NOS BFG Silvertowns, but the brand/model names have been ground off. These are going on Henry wires on the front of my banger A Tudor....if anyone wants to know. Pics: Now, what do these codes mean? Production dates?