1969, Tunisia, Habib Bourguiba. Large Proof Silver Dinar “Neptune” Coin State: Tunisia Mint Date: 1969 References: KM-298. Denomination: 1 Dinar - Neptune. Condition: MInimal storage deposits and barely visible contact-marks, othewrise Proof! Material: Silver (.925) Diameter: 40mm Weight: 20gm Neptune (Latin: Neptūnus [nɛpˈtuːnʊs]) is the god of freshwater and the sea in Roman religi ...