Is this Quoc Turquoise Inc or something else?

The look of this pendant and the hallmark seem to suggest it’s a Quoc Turquoise piece, but there is no copyright symbol. I’ve never seen a Quoc piece without it. Could it be something/someone else?
Stumped.

Pretty certain that’s Quoc. the little dimpled “feather” tips seem to be indicative too.

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Thank you so much for your help!
Ursa