Oldest coin with denomination on it?

Hi everyone,

I was wondering : what is the oldest coin with its denomination figuring on it ? Not just a symbol (like the X on roman denarius) but a full word, like "1 dollar" or "Ein mark" or whatever else.

I don't know if my question is very clear...

Also, what's the oldest one in your collection?

I think my oldest is a half marck 1573 Livonia