Antique sterling silver Crisford good and Noris scottish thistle bar brooch #560

good Really amazing piece in sterling silver marked Sterling C&N. Which stands for Crisford & Norris which operated between 1895 and 1912.
Very unique piece, I am unsure what the red part of the piece is made out of.
Antique scottish jewelry

This is an antique piece and I will leave any cleaning up to the buyer