My eyesight is deteriorating. I think this is NvdC 191, but I would appreciate confirmation. I believe the other side is blank. I have high resolution pictures available if you want them. The coin is 0.4 gram, 13.8 mm, tin (possibly zinc)
1163 is correct. It's anywhere between #191 and #192. There are many variants missing in both, Millies and Netscher/van der Chijs.
Thank you. Appreciate the help of your eyes as well as the point you make. You can't collect these like you would collect euros, where every little dot counts.