Minting a coin worth the equivalent of one-quarter of one cent

The Hondurans central bank has put out a tender call for 140 million coins, in four denominations.
Which I find puzzling. Coins are little used here. Prices are almost all rounded to the nearest lempira, with each one worth about five cents Canadian. In the big city, supermarkets sometimes give coins and on rare occasions I've received them here.
More puzzling are the denominations.
The bank wants 60 million coins in denominations of 50 and 20 centavos - roughly 2.5 cents and a penny in Canadian currency. Maybe those would be useful (though not based on my experience).
But it also wants 80 million coins of 10 and five centavos - about one-half and one-quarter cent Canadian.
All in, the coin production will likely cost something like $1.5 million.
And unless I'm missing something - which is not uncommon in my new home - it seems an odd way to spend money, especially for the low-value coins.

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