Unit: 1/Schwere Panzerjäger-Abteilung 653 = 1st company 653rd Heavy Anti-Tank Battalion Tactical number: 131 = 1st Company, 3rd Platoon, 1st vehicle Official German designation: 12,8 cm Panzerjäger Tiger Ausf. B Jagdtiger Ordnance inventory designation: Sd. Kfz. 186