I totally missed the headlights Uhu, sorry. The later mods threw me off. FYI Barra, when the 501 adopted red numbers with white outlines they were attached to the 10th Panzer Division and used 7 and 8 series numbers. The tanks were not yellow (RAL 7028) but rather Afrika Braun (RAL 8020) with color photographic evidence and some might have been grey oversprayed with green, conjecture.