Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Glamorgan Colliery, check
Circular disc with 1.5mm rim, outer circle with maker's name and address, inner circle with at least three sets of numbers from top to bottom, hole punched through centre/top outer circle
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.