Whether the One Ring has any kind of being? And it seems not:
For the One Ring neither exists now, nor did it exist at any time in the past, for it is legendary [fabulosus]. But whatever exists at no time has no being, ergo etc.
On the contrary: whatever is the object of knowledge exists, for of nothing nothing is known. But of the One Ring many things are known, for instance, the names of its possessors: Sauron, Isildur, Smeagol, Bilbo, Frodo. Ergo, etc.
Again, we may indicate the Ring's exemplary cause, namely elvish lore [doctrina Eldaliae seu Larum antiquorum]; its efficient cause, namely the Dark Lord [Dominus ater seu anularius magnus]; its formal cause, namely roundness [figura orbis]; its material cause, namely gold [aurum]; and its final cause, as its own inscription said:
Unus anulus omnes regere, unus anulus eos comperire,
Unus anulus omnes redigere et in caligini eos devincire.*
But where the cause is posited insofar as it is a cause, the effect is also posited. Ergo, etc.
*The verse, of course, famously concludes in terra Mordor [indcl. n.] ubi tenebrae latunt.
It remains to be seen whether any more fragments, or even the whole work, might surface at some future date when the world's libraries are better catalogued.