The blade in a Rolls razor will sharpen up just fine on a regular hone. No need to remove the guard, just flip it from one side to the other when you change sides. It's just a little tricky placing the blade on the hone spine first so as to not destroy the edge you're making.

I got my best results with a circular honing stroke, doing ten strokes and then changing sides. YMMV.

You'll want to strop it using the one that is in the case. It's probably dried out, but some Fromm's strop dressing should bring it back to usefulness. Take the strop off of the cover to apply the dressing.

Rick