I don't think date matters all that much for zodiac sequences as a whole. They were copied to such an extent that choices or mistakes made by someone in the 13th century still echo in the late 15th century. When we dated the Gemini, Virgo and archer, we used dress, not the overall composition.
What's remarkable about this series is that it matches pretty broadly. I mean: quite a number of figures are similar enough. I'm not sure how other "broad" similar series compare, it would be interesting to put them side by side.
Edit to clarify: of course date does matter. But what I mean is that the genre is so traditionalist and dependent on exemplars that later manuscripts may still reveal something of interest.
What's remarkable about this series is that it matches pretty broadly. I mean: quite a number of figures are similar enough. I'm not sure how other "broad" similar series compare, it would be interesting to put them side by side.
Edit to clarify: of course date does matter. But what I mean is that the genre is so traditionalist and dependent on exemplars that later manuscripts may still reveal something of interest.