Let's rate some bulls

[eggyk]

Nice! It looks relevant.

By the way, looking at that Zodiac sequence, I'd have dated it half a century earlier. If they were done in the last quarter of the 15th century, they were exactly copied from a ca.1400-1440 model.

The style, colouring and medallions vibe most remind me of 3 manuscripts that contain the "comets" work, all from strasbourg from around 1440-1475:

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Obviously not these exact depictions. 

Edit: In fact, i guess it just reminds me of the medallions seen in almost all of the top entries. All basically from southern germany, most of them ~1430-1475. Unfortunately I couldn't find the actual justification for 1475-1500 that mandragore used.