Please Add Date to Grand Duchy of Warsaw 5 Groszy 1811-1812 [solved]

Please add the date "1811 IB Restrike from Prussia 1/24 Thaler" to the date table for this coin:
https://en.numista.com/catalogue/pieces63667.html
(and, in my opinion, "Overstrike on Prussia 1/24 Thaler" might be clearer wording for both the 1811 and 1812)

The date table is currently locked.

Here is proof of its existence (I also have one in my collection): https://wcn.pl/archive/315270.

Thank you.

This is done by pejounet (he just forgot to mark it as such ).