So, far, the best possibility I can find is this type of Charles V:
https://www.acsearch.info/search.html?id=7307286
According to Gelder & Hoc, the cross has 2 vuurijzers and 2 crowns.
It was made in a groot of 1.83 grams, and halve groot of about 1 gram, but not a quarter groot.