Tochka-U serial number.

From a Russian news site: "Italian journalist Fabio Mario Angelico filmed the fragment of Tochka-U, which arrived at the Kramatorsk railway station with a mass of human casualties, and serial number Ш91579 is visible on it. Before that, Ukrainian missiles Sh91565, Sh91566 were spotted in the Donbas. The difference is 13." This is the video of the Italian TV channel, LA7, showing the serial number. Some say this could show it was a missile from the same batch that was used in previous attacks in Donbass. The video doesn't say much of importance, they just show the missile.
NOTE: The serial number is not proof of anything in itself. But, according to Russian blogs, missiles with similar serial numbers were used by Ukraine in previous attacks, and there is photo evidence, so if that's confirmed, it's unlikely that it would belong to Russia. Well, unless Russia stole it from Ukraine, then used it to blame Ukraine. But this wouldn't make much sense and seems too complicated...
Well, I don't know if the thing about the serial numbers proceeds. But most media including The Guardian are still reporting the attack as "Russian". If this is confirmed as a lie, there is little chance that anyone will believe anymore anything the Ukrainian government or Western media (save a few independent journalists) say.
Western government should stop immediately sending weapons to perpetuate the conflict, and a peace agreement must be reached as soon as possible. This senseless war and the awful death of civilians has to end.
P.S. FULL VIDEO IN ITALIAN (but they don't say or show much more):
https://tg.la7.it/esteri/guerra-ucraina-ecco-il-missile-che-ha-colpito-la-stazione-di-kramatosrk-08-04-2022-170588