After reading the original webpage and notes it appears that it is possible my monitor just doesn't have this information stored, in which case it must be working as expected...

Quote:

'Another reason for reliability problems is that there is no
'requirement in the EDID spec that a manufacture include the
'serial number in the EDID data AND only EDIDv1.2 and beyond
'have a requirement that the EDID contain a descriptive
'model name
'That being said, here goes....