[78-L] Question on G & T recording speed from 1902

[bruce78rpm at comcast.net]

Does anyway know if there is any written documentation as to the speed Gaisberg used to record various records in 1902? Specifically I would like to know the correct speed for this one: Madame Suzanne Adams, "Valse Aria from Romeo & Juliet" number in the runout is as follows: 2037-771B, also at the top of the runout is 91006. This is an imported G&T Victor Monarch 10" Record. 

Thanks in advance, 

Bruce