At last...
Apologies for the poor image, it's what the "culture Secretary" put out on the gov.uk website. The obverse is a double portrait of King Charless III and Queen Camilla by Martin Jennings, the reverse is Charles' cypher and the date 6 MAY 2023 within a laurel wreath. The ribbon is dark blue with a white-edged red central stripe and narrow red edges.
Distribution is to be to everyone actively contributing and supporting the Coronation on 6 May - including choristers, police officers, military personnel and St John Ambulance personnel - as well as those directly involved in the delivery of the Coronation. It will also be given to serving frontline members of the police, fire, emergency services, prison services and armed forces that have completed five full calendar years of service, and to holders of the Victoria Cross and George Cross..
It's being made by Worcestershire Medal Service Ltd in Birmingham.
Now to go and search for a better image, a good enough one for my website