supply of pantograph type am-12 complete with throttle valve, main spring and other accessories without servomotor and foot insulator, m / s. sil ordering ref. 22110001 for a.c. loco. with metalised carbon strip as per rdso technical circular no. elrs / tc / 0071-2001 [ rev.0 ] in place of silicon manganese steel strip. each unit should be emboss / engraved with makers name, month, year and batch no. of manufacturing at a conspicuous place.pantograph type am-12 complete with throttle valve, main spring and other accessories without servomotor and foot insulator, m / s. sil ordering ref. 22110001 for a.c. loco. with metalised carbon strip as per rdso technical circular no. elrs / tc / 0071-2001 [ rev.0 ] in place of silicon manganese steel strip. each unit should be emboss / engraved with makers name, month, year and batch no. of manufacturing at a conspicuous place., pantograph type am-12 complete with throttle valve, main spring and other accessories without servomotor and foot insulator, m / s. sil ordering ref. 22110001 for a.c. loco. with metalised carbon strip as per rdso technical circular no. elrs / tc / 0071-2001 [ rev.0 ] in place of silicon manganese steel strip. each unit should be emboss / engraved with makers name, month, year and batch no. of manufacturing at a conspicuous place.