I've just acquired these for “bobbins†and they both need work to make them shave ready, if (that's) possible. The top one is marked John Clarke & Son Sheffield Corporate Mark surrounding script that is N.E.V.A and comes with a box. The lower one in slightly poorer condition and is marked what looks like SBRO and the end of the engraving/stamping is covered by a water mark. The back has Ground in Hamburg on it. Any advice as to where I could get these made shave ready would be gratefully received.....