Unfortunately, I can't say for sure, who made this massive(15/16) razor.
Curt Hoppe - maker,
Carl Hoppe der Jungere - maker,
Eugen Hoppe - maker,
Julius Hoppe - maker,
Samuel Hoppe - maker,
Wilhelm Hoppe - maker, stamp "Guillermo Hoppe",
(Samuel and Wilhelm are from one family).
Hoppe & Cî, the owners were Ernst è Richard Hoppe, later and Auguste Hoppe.
Well-known company Giesen & Forsthoff "Timor", has trademark "German Hoppe".
These makers, that I know only. Probably, there are some more.
As you see, not so simply with all these Hoppes.