This is thought to be from 200 AD.
Trying to determine if it's credible I searched about a bit. It's on Wikipedia which is to be taken with a grain of salt. It has also featured in blog after blog which is the way of these things.
Eventually I found it in the Fitzwilliam Museum collection - http://tinyurl.com/u9lzm - which makes me more confident.
It's interesting how the modern equivalent is for fixing things - whereas the Roman one is for eating.