That last letter in the rosettes T-O might be g or y. I don't think it's a as you mentioned on Nick's blog. The VMS a never curves down and to the left as far as I can recall.
The first letter in the rosettes T-O looks to me like a half-bench-P (cp or op squished together), or a unique glyph. In contrast, the one in the second T-O looks like op. Most of the time there is a clear separation between the o and the p. I don't think we should assume they are the same just because they are similar. There are many half-benches in the VMS and a number of uncommon combinations that look deliberate, not accidental.
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I don't think it's a good idea to refer to these as T-O maps. We don't know that they are maps.
And by the way, even if they are maps, they were not always labeled with Euro/Asia/Affro (they frequently spelled Afro with ff), sometimes they were named after Noah's sons.