Question about Qianlong mark

[JulieA]

Hi, this mark has an odd character in the upper left. I am wondering if there are authentic marks with this character. If not, does anyone know when/where marks like this one are used?

Thank you!

[peterp]

This is a spurious imperial mark. No marks are written or stamped on unglazed areas of porcelain.

[JulieA]

Thanks!