I believe the 1/2 after the Henckels razor indicates a round point, at least this seems to be the trend I see on ebay. I wish I knew more about the different numbers, I believe a 70 is 5/8, 72 is 6/8, and 17 is 7/8 or 15/16. Will someone who knows more please share? Thanks
You are correct, in addition #14 is an 8/8 and a #59 is a 4/8. There are also 1/4 hollow models, 72-V and 11-V, the latter being with an etch.