You can get one from the American Pilgrims on the Camino (http://www.americanpilgrims.com/camino/credential_req.html) in just a couple of days.
It is a free service. I just got mine from there and let a little donation to help fund their operations.
This site is run by Ivar at in Santiago de Compostela.
This site participates in the Amazon Affiliate program, designed to provide a means for Ivar to earn fees by linking to Amazon