I had an answer from Mantis. They admitted that they are wrong on 'anse de dinan'
Villa fisclis : I have not yet received word from the EGMP.
Here you find a crude translation from the information on the replica:
To celebrate the tentoonsteling coins and medals of the Kingdom
Belgium, which is organized in Brussels (Royal Library, Penningkabinet) from February 12 to April 2 19 7, is published by the medal publishers Fibru and Mauquoy, in cooperation with the Royal Library, a penny a faithful representation of a preserved in the Penningkabinet the Royal Library, Carolingian coin, the silver denier.
Front: the monogram KAROL VS, formed by the letters K, R, S and L, which are connected to an O which the letters A, D and V represents. Around this it until XCRATIOADLREX distorted legend "dei gratia rex" (= Charles, king by the grace of God)
Reverse: the to + ENVICODEONIT distorted Roundtext "in vico deonantis» (= in the settlement Dinant), around a cross, christian symbol of the Merovingian coins was taken.
This silver coin was between 867 and 877 struck in the mint of Dinant for the Carolingian ruler Charles the Bald (843-877).
It is the oldest coin, coming from our regions, in which the word rex (king) occurs, it also has virtually the same constitutional significance as the present! The monetary system of the Carolingians relied entirely on the silver denier.
Confusion with the original currency was avoided by striking a disc of 21 mm diameter, the medal is considerably larger than the denier. To clarify that this medal 2nd relative to the published in 1973 stater of Nerviens in a series of 12, as it were, an overview on our numismatic coin history will form, was on the verge twice the publisher mark stamped.