Dude that is a D. It doesn't really matter anyway, but that is not a B. That picture shows it even more clearly. It doesn't bow out as much as a the D like we normally write, but that is just the style.
When I was learning how to write some of the OEG alphabet with a calligraphy pen that is stroke for stroke how the D was done. I even posted a picture above in post #9.
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