A smart-looking WAM-4P-6P-E #20506 from SCR's Vijaywada shed on its last leg of its journey with the Puri-TPTY express. While BZA writes "4P" in addition to "6P" in the classification code of the loco, AJJ prefers to mention the gear ratio below the windshield. TPTY branch line (Renigunta Junction). 2006-08-19. Ashwanth.