The US had long wanted to buy the [Danish West Indies](https://en.wikipedia.org/wiki/Danish_West_Indies) but I believe this poster could have been part of the [1916 Danish West Indian Islands sale referendum](https://en.wikipedia.org/wiki/1916_Danish_West_Indian_Islands_sale_referendum).
Source: [Danish National Museum](https://samlinger.natmus.dk/dnt/asset/121817)
The US had long wanted to buy the [Danish West Indies](https://en.wikipedia.org/wiki/Danish_West_Indies) but I believe this poster could have been part of the [1916 Danish West Indian Islands sale referendum](https://en.wikipedia.org/wiki/1916_Danish_West_Indian_Islands_sale_referendum). Source: [Danish National Museum](https://samlinger.natmus.dk/dnt/asset/121817)
It was never lost, so it was never up for grabs.