Why were ancient minters so bad at making round coins with the pattern in the middle?

Question

[Roman coins often look like total crap, why?](https://miro.medium.com/v2/resize:fit:1400/1*JEAj3t9m9nAwrsFLLTMAQw.jpeg)

In: Technology

Answer 1

It was pretty common to shave off part of coins to collect the metal for free to melt down and use or sell, this is why modern coins have texture on the outer edge.