Please Add New (earlier) Currency for Low Countries, Feudal / Liege [Risolto]

In the section Low Countries, Feudal / Liege, Prince-Bishopric, the earliest currency we have in the catalog is Florin (1456-1545).

I am beginning to extend the catalog for this issuer back to the 11th century, so we will eventually need an earlier currency to cover these entries (for now I am listing the currency as unknown).

I am not sure if earlier coinage was based on the Groot / Gros (by analogy to nearby states like Brabant and Namur), or if the earliest years were based on the Penning / Denier.

Thanks in advance!

A more specific proposal, since we now have a large section of "Unspecified Currency" entries for Liege.
Currency = Denier (975-1274)
Currency = Gros (1274-1456)

Although I don't have a reference to confirm these dates, the evidence that this is a reasonable proposal :
- only deniers are issued from the start of the prince-bishopric in 975 through the reign of Henry of Gueldre (ends 1274)
- beginning with the reign of John of Flanders (starts 1282) fractional gros coins like esterlins (=1/3) and a little later, double esterlins (2/3) and gros are struck (and the end date of 1456 because we have the Florin starting 1456)
- this would also coincide closely with the timing of currency change in German States / Aachen, https://en.numista.com/catalogue/etats_allemands-1.html#c_aachen_free_imperial_city6118 which was the nearest bishopric in the Lower Rhine - Westphalian circle

If more accurate date ranges are determined later, we can modify.

This is now added!

Thank you! Of course this means your inbox will soon be full of modification requests (I will also fine tune some titles, and improve the catalog references and legends as appropriate)