MS68-MS69 - Tonga, 1967 Palladium 3-coin Set

Tonga, King Taufa'ahau (1965-2006), palladium 3-coin Set, 1967, celebrating the Coronation of Taufa'ahau Tupou IV, comprised of Hau, ? Hau, ? Hau, struck in 0.9800 palladium, head right, small crowns around border, rev. crowned arms, edge lettering 'HISTORICALLY THE FIRST PALLADIUM COINAGE.', 112g (KM.MS2). All three coins graded and slabbed by NGC as Hau MS68, ? and ? Hau MS69, and accompanied by original box and certificate of issue. The first coinage ever struck in palladium, so of great significance to both numismatic and Tongan history.
Hau = MS68, NGC Certification 8221205-004? Hau = MS69, NGC Certification 8221205-005? Hau = MS69, NGC Certification 8221205-006