Identify Navajo silversmith C.A.B. on katsina

[janebee]

This is a silver Katsina that my husbands grandfather owned and wore as a bolo tie. I had a loop added so I could wear it on a neck ring or chain. It must be from the 1920's or 30's as he died in 1985 at age 96.
He was in Texas and the southwest early in the 20th C. It is signed C.A.B. (the C looks like a G because of a tarnish spot.)

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