4 ms·
And before letterlocking people used envelopes, clay envelopes in Mesopotamia that is.
by singularity2001 8y ago
And before letterlocking people used envelopes, clay envelopes in Mesopotamia that is.
- pbhjpbhj 8y agohttps://en.m.wikipedia.org/wiki/Bulla_(seal) https://en.m.wikipedia.org/wiki/Bulla_(seal) This article mentions clay envelopes which supposedly developed in to tokens.