True that your tumblers may have been cut as early as the 1890s, but I suspect it's also possible they were cut decades later. This was a very popular pattern, forming the basis for the pressed pattern Daisy and Button as well. One book I have shows Russian by 7 American companies as well as a bunch of unknowns - and that's just American glass.
Unfortunately, yours isn't a particularly fine example. Unlike the Webb one shown in Hajdamach, yours doesn't have cutting on the hobnails (the 8-sided buttons), and they are rather irregularly shaped. There are a couple different versions of Russian, with different cutting on the hobnails.
JP, are the hobnails on yours cut like the example in the book (with stars)?