50 Drachmas (1970) in silver (0,900) commemorating the April 21st 1967. Phoenix and soldier on obverse. Inside slab by NGC "PF 67 ULTRA CAMEO / 1967 REVOLUTION". Cert number: 6634402-008. (Hellas 241). NGC changed the Census for these coins and named them as Proof-like & Deep Proof-like.