Unit: 1/Schwere SS Panzer-Abteilung 501 = 1st company 501st SS Heavy Tank Battalion Tactical number: 121 = 1st Company (Kompanie), 2nd Platoon (Zug), 1st Vehicle Official German designation: Panzerkampfwagen VI B Königstiger Ordnance inventory designation: Sd.Kfz.182 Tank classification: heavy tank