12 digit Vin identification

G'day all, I've just purchased a 81 gpz1100 and am trying to decipher the vin. KZT10B009585. Can anyone help?

That looks more like an engine number?

Year & Model '81 KZ1100-B1:GP
Color(s) Firecracker Red
VIN Range JKAKZBB1vBA000001 - 010400
Engine No. Range KZT10BE000001 - 010400
Engine No. Location RH top crankcase, below EFI unit
Cylinder Mark 1.089L
Cylinder Mark Location Front RH corner
Engine Type 4-stroke, 4-cylinder, DOHC, Air cooled
Bore X Stroke 72.5 X 66.0 mm
Compression Ratio 8.9:1
Maximum HP 108 at 8500 rpm
Maximum Torque 9.8 kg-m at 7000 rpm