Issuing authorities named on coins

[Pabitra]

It is not an old phenomenon.
The current circulation coins of Bangladesh has higher denomination showing Bank's name.
The coins issued by country are accounted for by finance ministry, in government budget as money.
The currency notes and coins with banks name, are promissory notes or metallic equivalent thereof.

Bangladesh Govt. is currently authorised to issue coins only up to 2 Taka.

And are there still any private authorities, rather than public ones, that issue the national coinage in some countries?

Hong Kong notes are issued by three banks, one of which is Standard Chartered Bank, listed in London and Hong Kong Stock exchanges. If ever, Hong Kong decides to issue coins above 10 Dollar face value, it might be issued by these banks, if the current law is not amended.

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Guyana, 5 dollars, 1996.

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Lebanon, 2006, 50 pounds. 

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Nauru, 10 dollars, 1993.  Collector coin. 

Nauru is an independent state. It uses the Australian dollar, as it does not have its own circulation coinage.

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Peru, 1 nuevo sol, 2012.

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Syria, ½ piastre, 1921.

To my knowledge, this is the only Syrian coin that references the Bank of Syria.

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Philippines, 5 piso, 2005  Central Bank of the Philippines.

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Myanmar, 100 kyats, 1999.

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Democratic Republic of Congo, 5 likuta, 1967.

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Zaire, 5 zaires, 1987.

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Cyprus, 1955.

Normally either the country or the bank is referenced on the coins. Just a few coins have referenced the government.

 

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Pakistan, 10 paisa, 1962. 

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Ajman, 7½ riyals.  Official collector coin.

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Rais al Khaimah, 150 rials, 1972.  Official collector coin.

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Anguilla, 1 dollar, 1970. 

The Anguillan government tried unsuccessfully to break away from British rule in the late 1960s.