I found a silver version of this medal cited in Tijdschrift van het Koninklijk Nederlandsch Genootsshap voor Munt- en Penningkunde, (Journal of the Royal Dutch Society of Coin and Medal Studies)p.285 (1903):

It looks like maybe yours was struck in bronze?
This similar type struck in bronze by the same organization a few years later (maybe there are annual or bi-annual meetings) sold a few years ago at auction for 24 euro:
https://www.numisbids.com/sale/4610/lot/?lot=885
An additional bit of trivia is that Valkenburg had a mint in medieval times (14th/15th c.).

It looks like maybe yours was struck in bronze?
This similar type struck in bronze by the same organization a few years later (maybe there are annual or bi-annual meetings) sold a few years ago at auction for 24 euro:
https://www.numisbids.com/sale/4610/lot/?lot=885
An additional bit of trivia is that Valkenburg had a mint in medieval times (14th/15th c.).
Edited by tdziemia
04/24/2025 07:06 am
04/24/2025 07:06 am