In f67r2 (see Beinecke scan You are not allowed to view links.
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Login to view.) there is a detailed band around the presumed zodiac chart, which has a discontinuous/inconsistent pattern of blocks that I would assume has some symbolic purpose. I searched a bit but haven't found any discussion about it.
The ring is partially obscured by a damaged edge on the left side of the page. There are 44 blocks visible, but based on the consistent width of each block the diagram should have had exactly 50. There are minimally seven distinct types of blocks, mostly the same for each type, but with some distinctions.
Is there anything similar in other manuscripts? Does any of this stand out as familiar symbolism to anyone more knowledgable?
The outer band of f67r2:
The four quadrants of the band, unrolled for easier viewing:
The various block types:
(There are three instances of the "bubble" type, but only one of them is clear. The top-right and center-right instances are both visually difficult to parse. There are either mistakes/imperfections in each, or both of those have different bars on the edges than the top left bubble block. There are also three small ink dots within one of the pins blocks in the bottom right, which is unique and possibly intentional.)
Also of interest is that the number of separating "bars" between each block varies around the ring, in threes and fours, possibly a single five in the top right, and a single two in the bottom center (possibly a mistake? in that block one of the two center 'spikes' is floating, which is unique)