R.S. Richardson & Co. were established in 1828:

R.S. Richardson & Co. - Edinburgh - 1908
The tone of the advertisement, to me, appears more of a retail cutler, rather than a working one. But they may have made these up themselves using blades forged at somewhere like Sheffield.
The embellishments and the application of them may have been out-sourced or may have made in-house.
Trev.