Please help me with the date of a William III halfpenny [solved]

Hello!

I'm new here. Could someone please help me identify the date of this William III halfpenny, if that's possible? The date has worn off the reverse. The coin is 27mm in diameter, and I don't know its weight. Text on front: GVLILLMVS TERTIUS (with dot). Text on back: BRITANNICA (with dot). The coin isn't magnetic.

Thank you!

PS The coin belonged to my grandfather

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The date has worn off, but (according to the catalog) possible dates are 1699, 1700 (most common), and 1701:

https://en.numista.com/catalogue/pieces20920.html

Thank you!