Request extra year from coin

Coin KM# 137 also exists for year 1949

What country and coin?
A link to the page would help.
Maybe this one >
https://en.numista.com/catalogue/pieces1871.html
and if so this page agrees there is no coin (Dutch text BELGIE) for that year,
https://www.ngccoin.com/price-guide/world/belgium-50-francs-50-frank-km-137-1948-1954-cuid-25401-duid-73431
but there is that date on KM# 136 for the French text BELGIQUE coin >
https://en.numista.com/catalogue/pieces1870.html
So need to see both sides please. Welcome to the forum.