Old School X-Acto Find

I love x-acto blades(even though new school x-acto's recently sent me to the emergency room for 8 stitches. so lame) Still, you know I had to buy these vintage x-acto blades when I stumbled upon them the other day. They were all perfectly unused,oiled and sharp. Actually they're better quality than new x-acto blades (thicker/long lasting). 17 packs 10 bucks. Apparently they used to come wrapped in wax paper.