The numbers are a little clunky, admittedly, but hey, THEY'RE NOT WORSE THAN SLAPSHIRUCKISH, so you can't exactly be too upset there. Though it does make me wonder how you'd read off a serial number without accidentally mixing the numbers up...

Also, do you have any plans for a word meaning 'zero'?

Also also, I find it curious how five isn't used in the definition of six. (I think I called this "base-eleven thinking in a base-ten system" once when I was younger.)