Belgian 50 centimes coin HELP

hello


What is the different between this coin

https://en.numista.com/catalogue/pieces5333.html

and this coin ? I know the first one have a larger head but I don't see it. Who can help me ?

https://en.numista.com/catalogue/pieces752.html

Thanks

kenneth

The latter coins is slightly heavier.

http://monnaiesetvarietes.zxq.net/FICHES/Belgique/$BELGIQUE%2050%20centimes.pdf

   That is the site of Numista member 'cobra' and has pictures lower down of head sizes.

So according to that page the two versions are:
  French text
Large 1952-1955  /  Small 1955-1982  /  Very large 1981-2001
  Dutch text
Large 1952-1954  /  Small 1956-1981  /  Very large 1980-2001

 Example dates: a Dutch 1958 would be smaller than a 1953, and a 1987 would be very large.
The KM# 149 (1956-2001) page saying smaller head is not correct, as only 1956-1981 is smaller.