Particularly noteworthy are the soft enamel colors on early figures. Absent are the harsher greens that came about after 1800 when chromium (discovered in 1797) was introduced into the enamel palette.
I tend to think the marked figure of Spring on the left is an earlier Walton figure. There is a refinement about it that I associate with the earliest figures, but perhaps this is a leap of faith on my part.
Alongside is the only marked Walton figure that I can date with any precision. The pugilists Spring and Langan fought in 1824, so this figure group was made around that year. But it doesn't give a single clue to help date other figures. And again, it is particularly refined. If it were not linked to a datable event, I might have been tempted to stick an earlier date on it!
An under glaze figure will generally be dated between 1790 and 1820. After that, under-glaze decorating is thought to have gone away. The pretty pair alongside is courtesy of John Howard's archive.
And to hammer home my point yet again, here is another under-glaze colored figure on the very same 1834 theme.