@ZacUKplease solve the issue when it is raised, no point leaving inexistant lines 😁
I checked and Antillen sets were only issued starting in 1978 (without token) and from 1979 (with token)
https://www.theopeters.com/overzeese-gebieden/nederlandse-antillen/jaarsets/?page=all
So, there is no 1976 Antillen token. Either the owners just marked the first line on the page, which would be weird with such a clear year on it or more probable own the Dutch 1976 token (N#85342), which happens to be in Medal alignement like the later Antillen tokens.
So I would suggest to either contact the owners of the 1976 line (don't think there are more than a handful), or just move them yourself to the Netherlands 1976 token and delete that line.