For those who collects Fiume, this might be interesting:
I've worked with Ivan Martinās, one of the worlds leading experts in making these pages about the forgeries of Fiume. This is the 'first edition', with 150 very high quality images. Genuine characteristics, forgery types, overprints, forged signatures etc.
http://stampforgeries.com/forged-stamps-of-fiume/Example of pages:



