No I don't think you have to get a number in order, mine comes from my numbered 5.1. Grab some wood and start a post to share your experiences with your knife, then reach out to Silver. I started with some left over wood, a pine hand rail and now I buy it on a regular basis and whittle and carve every week. Not a bad idea with international travel. The other way you can do it is to ship and insure it both ways.