Aaron,
That Berliner Gramophone ad is interesting in that it is one of the few that employed the word "Zonophone" as a test label to market the Berliner Gramophone. (Sometimes collectors are confused by this, thinking that the Zonophone - a slightly later machine - was being marketed here, or that it was an exact duplicate of the Berliner Improved Gramophone! Not so - it was only a name at the time of your ad.) I've seen evidence of this activity during the fall of 1897 and early 1898. Is there a date on your ad?
Frank Seaman was aware of the potential confusion between "Gramophone" and "Graphophone" in the minds of customers (people still confuse them today!). Seaman wanted to experiment with a different name for the Berliner Gramophone, but had his hands slapped by the Berliner management who insisted on marketing the machine only as the "Gramophone." In late 1899, Seaman began marketing a new machine - not manufactured by Berliner, and dusted off his old label: the Zonophone. This was the machine we know today by that name.
Nice ad!
George P.