The "Patti" fake has nothing to do with the Pathé brothers, it was done much later (probably to defraud William Seltsam of the IRCC who issued the cylinder with Patti's name on the label). The Korsoff is dubbed acoustically from her Edison Diamond Disc mx. 395-B (issued in various couplings as 82007, 82008 and 82009), they use only one verse of the original recording. Preceding this, the cylinder contains a spoken announcement by a male voice in Italian, while Korsoff sings in French. Despite the distortion of the acoustic dubbing, the small orchestra typical for Edison discs can be discerned, and at any rate, the portion of music heard on the cylinder (and thus on the "Patti" IRCC disc) can be synchronized to the Diamond Disc, proving it is the same performance. The original Korsoff recording dates from November 1910 and was first issued to the public in 1913, so the cylinder cannot be earlier than that year (but more likely from the late 1930's).