... coins Product namePersonal new university masonic metal coin for souvenir or commorative Materialzinc alloy,brass,bronze,aluminum copper etc ... etc.Size35mm,40mm,45mm,50mm or customizedThickness1.5mm,2mm,3mm,4mm or customizedLogolongzhiyu or OEM Process Casting,engraving,printing,etching ... on meterial,process,packing,size,artwork etc.12.Ideal for promotion gifts,business gift,wedding gift,awarding gift ...