I have received several Creation Requests for this issuer, which issued quite a few types between 1557 and 1631.
For example:
https://www.acsearch.info/search.html?id=5149634
https://www.acsearch.info/search.html?id=8110068
Although this was Low Countries during the era of Spanish rule, the Abbey was not under the government of Spanish Netherlands, and should be a stand-alone issuer under Low Countries, Feudal.
As the denominations of the coins were the same as other issuers in this area (daalders, stivers), probably the currency was the Gulden.
(I will accept the submissions “as is”, and move them when the issuer is created).
