:: Could this not be the dome top to an "egg coddler" and I know they exist because I have seen a Tiffany egg coddler in person, it had chicken feet ::
Here is an example in silver plate, it seems as if sterling silver examples are rare, also I can't recall ever seeing a date-code-symbol on a piece of Gorham silver plate, usually I see them on sterling silver, and even on sterling silver they are uncommon ::

