I remember the similar shaped handled dish that m mentions - and am sure nappy was the name used across the pond rather than here - I've looked again in S. & F. where these handled shapes are described as 'jellies or sweetmeats', and were available in sizes around the 4" - 6" mark.
The S. & F. catalogue in question dates to around the early 1880s, and there are a several varieties shown, all with this circular shaped handle, so assume a reasonably common item in the second half of the C19, although whether more common at either end of that period I'm not sure.
Unfortunately - but probably for obvious reasons of not wishing to share their suppliers - S. & F. make a habit of generally not including makers names with any of their products, so no idea as to origin of similar little dishes they offer, so theirs possibly of British origin, but always a chance they started life on the Continent somewhere.
Having looked at my pix of TNA images for 1870, believe this M. W. design relates to Registration 237741 dated 3rd January of that year. The shape against which this Registration was first recorded was a shallow oval shaped dish - but regret I don't know the size - perhaps if Neil has that shape he can tell us - it is likely that Neil has seen the Kew picture for this Registration. So that's makes a total of three different shapes against 237741 - always possible there were more, but don't presently know.
As to m's comment about silver being preferable to glass for 'taste vins' - I could be tempted to think the opposite. There are occasions when I've been able to smell silver, for whatever reason, so would have thought glass more suitable from that point of view, although agree carrying around one of these things in your pocket could be iffy if someone nudged you suddenly.
If Fred wants the Kew picture for this Registration, please let me know.