Different versions of the "Seamaster" signature style

In attempting to ascertain genuine watches from fakes and redials I'm noticing differences in the way Seamaster is written on dials. I had concluded that the earlier examples have a more angular capital "S" than the later, rounder ones, but I'm now also noticing other differences, particularly in the way the final "r" looks. Some have a much more pronounced flourish than others.

Today I saw this example of a 2802 8SC which I understand goes back to the late 50s. An image search oon Google brings up a number of different dial and body colours, and some have the more angular style while other the rounder version. This one has the rounder "S" with the more pronounced flourish on the "r"

Am I right that the style changed at a point in time, and therefore I should be able to match the date to the style of writing, or did different contractors turn out various styles concurrently for any period of time?

Is there perhaps some kind of guide that I can refer to about this?

As far as I know both coat hanger and round Seamaster S coexisted in the 50s up to the early 60s. To be sure if a dial is original and not repainted it’s best to check it against other watches with confirmed original dials. To do that I mostly use the forum to find reference watches of similar age period / reference. The one you posted looks fine btw.

The OP's dial is absolutely correct. This version of "Seamaster" was quite common in the '50s, from 1954 onwards at least.

Wow! I own the watch in the above photo!