Which is more atmospheric and worthy of collection, Mu copper casting and seal cutting?

Copper casting seal, inheriting the ancient copper seal of Han Dynasty, as a casual seal, just has a deep sense of cultural heritage.

Famous seals, or bronze seals of seal cutting, or bronze seals of official scripts are better. Usually it can be used to sign and stamp, and impromptu calligraphy works can also be used to stamp.

Personal support bronze seal, not easy to damage, wear-resistant. It's hard to say that it will spread for thousands of years.