This disc is listed as Aeolian Vocalion, and the exemplar, if there was one at hand, may well have borne that label. The company was probably still identified as such in the advance listings column in Talking Machine World for May, 1921. It is worth noting, however, that the exemplar in my photo database is the lowest number from the 14000s series that I know for a certainty to have had at least some copies issued with the Vocalion-only logo instead of the Aeolian Vocalion imputed to this one. The Aeolian Vocalion logo would contnue to appear on numbers at least as high as 14200. Only four of those numbers are currently documented on the Vocalion-only label, and of those four none are documented on both,
I know of only one other issue ever, and that uncertainly from a largely illegible photo, that might have duplicated an issue from one of the earlier-used labels (in that instance the more archaic Aeolian Vocalion Lateral label) on a Vocalion-only labelled disc. For a number of reasons you would think that such occurrences would not have been unusual, would in fact have great utility for keeping the stock fresh and current for the marketplace, but they are almost unheard of on Vocalion.
When all is said and done, maybe things just moved too fast for Vocalion. In the space of a mere three of four years they went from vertical discs, to dual lines, to purely lateral stock. and eventually to a new name and new ownership. As for the labels, perhaps a wider sampling will shed better light on it ... perhaps not.