Eagle in Flight Pendant With Turquoise in Sterling Silver

VIntage cast sterling silver eagle in flight pendant. The bird of prey carries an orb of turquoise that has the attributes of the Cripple Creek Mine. It Is signed with an electric engraver and I cannot quite make it out. 

Wingspan is 2 3/8" wie and it is 1 5/8" tall. Weight: 20 grams. Nice strong bail.