Looking at the various date letter charts, they seem to be very accurate in minor details. However, here is a second example of Henry John Lias & Son (see prior goblet) having a small "l" with a slight added difference to the back left side half-way down. Such is noted on the small "l" in the Birmingham chart, but not for London. [I'm not referencing the cartouche shape, but the lett itself.] Were there mark variations at the assay office, or could this relate to an interim change of masters requiring another letter style?
Salt spoon sample:
![Image](https://i.postimg.cc/RFJrWkr8/image.jpg)