Camino de Santiago pendant that has a shell on the front, and "Camino de Santiago" engraved on the back. Comes with a black cord. Pendent is slightly larger than a 50 euro cent coin, about 25mm.
by 'yellow guides' I assume you mean the Conrad Stein ones - probably the largest route-guide collection around. By 'red' do you mean the Rother Wanderführer? Try Amazon.