Metal in 60-Across’s motto

Now we are looking on the crossword clue: Metal in 60-Across’s motto.
it’s A 26 letters crossword puzzle definition. See the possibilities below.

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Possible Answers: ORO.

Random information on the term “ORO”:
4733 ORO (1982 HB2) is a main-belt asteroid discovered on April 19, 1982 by Oak Ridge Observatory at Harvard.
Taken from Wikipedia