The coin is a remarkable find: it is a 24 skilling coin from the Danish West Indies (nowadays the US Virgin Islands), dated 1767. It was issued in the name of the Danish king Christian VII (hence the CVII monogram).
75,000 coins were struck with this date at the Altona mint and 12,000 at the Copenhagen mint.
The coin was struck in 0.500 silver
On 26/9/1940 the Danish king Christian X celebrated his 70th birthday. I suppose the medal could have been struck for that occasion.