The subject is not simply about the depiction of banknotes, but rather how printed reproduction serves to certify value in reproduction. My specialist interest within this topic concerns the graphic vocabulary that has ostensibly developed to secure printed money against counterfeit. This has itself been imitated to produce value on other forms of printed securities and debased for use in vernacular promotion such as advertising. The perspective of this research is unique in that it treats monetary ornament as a mechanism that is primarily promotional, rather than protective (or proscriptive).
The topic is treated more extensively in my doctoral thesis, of which parts may be (eventually) be downloaded as PDFs.
A short illustrated summary can be viewed or downloaded here (3.2MB PDF)