
it's just like this
https://en.numista.com/catalogue/pieces3588.html
but instead of "tong bao", like on all 1 cash coins, it says "bao guang" (雍正寳光)
My coin is 28 mm, looks machine-struck, with dots at the background, the reverse is boo-chiowan like the linked coin. I don't think it is a real coin, but is it a copy of something existing or just completely fantasy?