Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Deep Duffryn Colliery, lamp check
Circular disc with 1mm rim, single circle with raised lettering around outside edge (name of colliery and area), hole punched top centre, below is a letter and below this a number, both are punched, reverse is plain
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.