German Mark help crescent crown purity 4

[PennyT]

Hello, I have a box with German marks: crescent, crown, 800, 4.
It’s not a special box but I’m very curious about the number 4 and if it’s a manufacturer’s mark? I’ve searched the main website and the internet but I haven’t found any reference for the 4. Does anyone know what the 4 stands for? Thank you kindly, Penny
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[Bahner]

Hello, most likely an internal production number of the maker. It will be near to impossible to find out its significance. Regards, Bahner

[PennyT]

Thank you, Bahner. I appreciate your taking the time to respond.
I’ve only ever found things with troublemaker marks so why would this box be any different. I didn’t like their little putti faces anyway. Thanks again ... Penny