GX question

[cupric]

Does anyone know if the nut on a GX is tusq? Mine has a black nut, looks almost like plastic, but there are black tusq out there.
Also, if I ordered a new replacement tusq would the pronounced Gibson style work? The three I saw listed at StuMac are Fender, Gibson, and Epiphone.

 

[plaidseason]

Based on the time period, I'd guess micarta . . . but that's just a guess.