Riccardo Nobili 
The Gentle Art of Faking [EPUB ebook] 

In analysing the Faker one must dissociate him from the common forger; his semi-artistic vocation places him quite apart from the ordinary counterfeiter; he must be studied amid his proper surroundings, and with the correct local colouring, so to speak, and his critic may perchance find some slight modicum of excuse for him. Beside him stand the Imitator, from whom the faker often originates, the tempter who turns the clever imitator into a faker, and the middleman who lures on the unwary collector with plausible tales.