1) Accredited 2) Approved 3) Authorized 4) Canonised 5) Canonized 6) Commissioned 7) Empowered 8) Endowed with authority 9) Glorified 10) Lawful 11) Legitimate 12) Licenced 13) Licensed 14) Official 15) Sanctioned 16) Sceptered 17) Sceptred 
One that is recognised by the R&A.