- 199a: obtained 12-aug-2007
- Netherlands, by BM magneten, a Dutch factory making magnets
- 1993
- Plastic with magnets pieces Ø 3.0
- Black board with plastic frame 51.1×41.0×2.3
- 199b: obtained 4-feb-2012
- Netherlands, by BM magneten, a Dutch factory making magnets
- 1993
- Plastic with magnets pieces Ø 3.0
- White board with aluminium frame 51.1×41.0×2.3
