At least in the Japanese context that I'm more familiar with, there's also levels to seals: you have (possibly mass produced) lower-value seals for low-value si

At least in the Japanese context that I'm more familiar with, there's also levels to seals: you have (possibly mass produced) lower-value seals for low-value signatures, but you also have high value seals where an exact imprint is recorded with the government for high value signature verification, and physical possession of which is very carefully guarded.