This must be done very carefully so as not to ruin the repair that might have been quite expensive. It is also generally a good idea to ask the owner for permission before you do this. If he says no, then you know the piece is repaired. Steel are softer than real porcelain glaze and should not damage porcelain glaze more than ordinary cutlery would do. This information is given as an example of private conversation only and is not intended to be used as a promotion of any individual piece.
All opinions is the authors and is given as such with all hazards of judging anything from a photo.