It is a blade, in which case it was from a "Rolls Razor" for shaving. I think the script says that, so not too much of a mystery , and the case was for portability. I have seen them as a set of 7, one for each day of the week, and they came with a sharpening machine which was an oil stone on one side and leather strop on the other. The section is much the same as a cut-throat razor, but much (well a little bit) safer.
BobH

Hmmmmmm… It looks like a holder for the old ROLLS(not Royce) blades my dad used to use in his rolls razor.

If it's hall marked I pass.

The L brackets are just to stop your hand sliding up the handles as you squeeze because the force needed can be quite high. I have a similar one .

Well mine is a nibbler. Can't see the top of yours to be sure though. Nowadays I use an electric drill attachment one.

Mine has 'ergonomic' ribbed plastic handles.

Some designs are better at going round corners than others but the names are not that specific.