Registration of vehicles is a matter for the Office of the Revenue Commissioners.
Prior to the establishment of the central vehicle register in 1993, registration numbers were issued by the local licensing authority. My Department issued a Circular to licensing authorities in 2013, setting out procedures for record searches for vintage vehicles. Accordingly, I would advise that contact be made with Limerick City and County Council in the first instance to establish if there is a record of the vehicle. If a record of the vehicle cannot be located, the person should then contact the Office of the Revenue Commissioners in relation to registration of the vehicle.