How Many 1977 silver Piedfort 1 Franc coins exist?

Melior_Invenidiste

I found information on the 1/2 franc coins, but nothing on the silver Piedfort 1 francs. Does anyone know how many were minted?
Thanks

1984worldcoins

Krause says 259.

Cucumbor

And so says the french auction house CGB

Melior_Invenidiste

Thanks gents. Your research is much appreciated.