Consider these four spoons, which I have described in another thread (London 1784 - unknown silversmith LG or GS):

The engraved 'J' on each handle (and I'm sorry I can't show a better picture today) is almost certainly younger than the spoons themselves. The spoons were made in different years but were also part of a collection that included mid- to late-Victorian pieces bearing identical 'J's. I suspect the pieces were engraved at the same time - in the latter half of the 19th century. At any rate, the initial is not particularly interesting - and in my mind does nothing but detract from the aesthetics of the spoons.
Contrast with the French salt cellar with its discreet but stylish monogram, which I would never seek to remove (taken from this thread: Salt cellar from 1809-1819. Who's maker 'CMG'?):

So, my question is this: are the techniques of removing or covering engravings still rather sketchy or have they improved to perfection? Does it just depend on who does the work? Is the main problem one of determining how much silver to apply? I'd be very interesting to hear the forum's experience with this.
Best wishes
Mikael
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