Yes, only 1 set of numbers. For instance 333 is 3rd tank of the 3rd platoon in the 3rd company. 300, depending on the battalion would be the 3rd company command tank. So there were many tanks which wore the same numbers as the 3 digits tactical system was ubiquitous to the German military. Some SS units used a 4 digits system for a while and one used a single number and letter.

The black ones you have could be for 503 abt. The balkenkruz goes in the turret centre and the numbers forward of that.

The books that have the information you need is tigers in combat 1 & 2.