We only *asked* them to make 4000!

I suspect that they may have skipped some numbers for whatever reason. The mk1 serial numbering didn't affect the mk2 ones; 0600.00004 was the first unit which went to consumers (I have 03, rob has 01 and I think Steve had 02... these are ones I hand assembled (not the PCBs, the casing) to show the factory how to do it.

Hugo