Casgliadau Arlein
Amgueddfa Cymru
Chwilio Uwch
Ystalyfera Colliery, lamp check
Circular disc with 1.5mm rim, single circle containing large (4mm) raised lettering of name of colliery around outside edge, hole punched below inscription top centre, large (10mm) number punched in centre, reverse contains square centre/bottom containing inscription of divisional details.
Nid yw sylwadau ar gael ar hyn o bryd. Ymddiheuriadau am yr anghyfleustra.