THESAURUS
bill of health
affidavit, attestation, authority, authorization, certificate, certificate of proficiency, certification, clearance, credential, deposition, diploma, full pratique, navicert, notarized statement, note, pass, passport, pratique, protection, safe-conduct, safeguard, sheepskin, sworn statement, testamur, testimonial, ticket, visa, vise, voucher, warrant, warranty, witness