I've never understood the Acorn computer numbering system. For instance, why wasn't there an A6000? Or an A405 or an A510 or A520?

So, I'm not exactly sure what the official name of this machine is. Should it be "Archimedes 410/1" as the label suggests, or "Acorn A410/1" or "Archimedes A410/1" or "Acorn 410/1"?

I'm struggling to remember exactly what arrived with the A410/1 when it arrived, but I think it was just the main box. The monitor shown here is one of my existing Acorn monitors and I think the keyboard and mouse are from an A305 or A310 since they have the red function keys.