I'm curious if anybody can help me to identify this mystery neume, and more specifically how to notate it with gabc. I've seen it twice now in the 1933 Antiphonorium of the Order of Preachers. I've been retypesetting it and can't quite produce it. The note head, yes, but with the short stem, no. You can find it on "Lau" of "Laudate" on 5. Ant. You can also see it on the second attached file over "-ter" of "aeternum".
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