[William Cloud Hicklin]

I'm pretty certain the reference is to Annatar, even though "Moria" is anachronistic (but then , it's on the gate inscription!). Not just the mentions of Celebrimbor and Narvi, but the idea that they were cozened by false promises. Sauron is not offering to give Moria back, but that he'd refrain from trying to take it (let's remember that in the Second Age Sauron was pretty much Emperor of the World outside Lindon, Eregion and Moria).

A second reason is that the handwriting gives me the impression of being considerably later than ca 1950 when the Chronology itself was done, and feels to me like it was aborted drafting for Of the Rings of Power or perhaps the History of Galadriel and Celeborn.