Fantasy pieces issued under the "X" numbering in standard catalogs occupy a peculiar corner of Netherlands numismatics — privately produced outside any official mint authorization, combining portraits across three generations of the Dutch royal line onto a single coin that never circulated and was never intended to. The Liberation theme ties this to the thirtieth anniversary of the 1945 Allied liberation of the Netherlands, a date the Dutch commemorated extensively in both official and unofficial forms.
Fantasy pieces issued under the "X" numbering in standard catalogs occupy a peculiar corner of Netherlands numismatics — privately produced outside any official mint authorization, combining portraits across three generations of the Dutch royal line onto a single coin that never circulated and was never intended to. The Liberation theme ties this to the thirtieth anniversary of the 1945 Allied liberation of the Netherlands, a date the Dutch commemorated extensively in both official and unofficial forms.