@Vince1958
I took two credencials with me on my VdlP last October/November and filled one, almost filled the second. I got both of them at Hotel Simon in Seville, where I stayed for two nights before beginning my camino. Then I took one to the nearby cathedral and got it stamped to mark the beginning of my camino. I would not want to trust that I would be able to find one wherever I happened to fill mine. You could purchase one by mail from this forum or from your local pilgrim association, or get one In Seville from locations mentioned on the website of the Amigos de la
camino de Santiago en Sevilla at
www.viaplata.org . You can translate the website using google chrome then click on Attention to the pilgrim to find information about getting a credencial. As you need two sellos a day in your credencial for the last 100 km, it can fill up rapidly towards the end of your camino. Buen camino.