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.