Yes your correct the model is PDR1A1 Metsec/ CIE H74D or D car the model is D602 which was built at Spa road by Van Hool McArdle , CIE built D1-D521/23 , VHM built D522-554/524 , 555-602 in 1973 , D602 was the last Metsec CIE D , VHM then built the AN68 D603/604 - 840 1974 on .