Vintage German Brass Vanity Mirror

This was on my grandmother's vanity table her whole life. I know it's metal, I just can't tell exactly what kind because it's 2 tones of what looks like brass or bronze to me.. Made in Germany with 5x magnification, but I don't know what brand it is. I might try to clean it up, but I don't know the best way to do that, so I'll do some more research, and after I do, I'll post more pictures. It's in good condition for the age. I have no idea who made it, but it is double-sided. One side is magnified, and the other side is normal. Rotates in the center and was made very well. I'll try to answer any questions... but I just know it's very old and was very loved. I gave no vanity to use it with, so I decided to post it. If you happen to know anything about these old vanity mirrors, any information is appreciated ️

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