DD114249
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DD114249 is a graphic score composed of dots on graph paper and headed "Δ60" ("Delta 60").
It appears to consist of two lines of score; presumably the x-axis is time and the y-axis frequency, though the four legend points on the frequency axis — O, D and a full and crescent moon — are mysterious.
From the "Delta", it may be something done for Unit Delta Plus.
There is a high-definition scan of it in the Medialink library.
A similar score is DD114144: "Delta 61".
