... it seems everything was bigger in the old days.
These are (New) Casino Blankenberge.
The first one is 129 x 89 mm (T7 129x90). 1985-1995 version
The second one is 94 x 66 mm (T4 95x66). 1995-2001 version

Same denomination but down three sizes.

Or these
Kursaal Oostende 139 x 97 mm (T8 140x97)
Casino de Spa 94 x 65 mm (T4 95x66)

Double the money and only half the size.