DR1A or ER[2/9]. All of the electric multiple units built by Rvr use overhead catenary. and some pictures. https://www.nic.funet.fi/index/pics...trischka/lv-ldz-er2-salaspils-010417-full.jpg (ER2 flat cab design) https://upload.wikimedia.org/wikipedia/commons/thumb/1/1b/ER2-918.jpg/800px-ER2-918.jpg(ER2 round cab design) https://upload.wikimedia.org/wikipedia/commons/8/8a/LG_DR1A-283M_Paneriai_01.JPG (DR1A)
