In update 1.11.1 (released recently), WG gave absolutely ALL players 2 TOP weapons for tech tree tanks for free. WG, of course, doesn’t do anything for free, which is why it’s a feature.
T110E5 BB and Kranvagn BB – Their presence in the event opened access to the following guns:
• 120 mm Gun M58 – 60,000 experience – M103, T110E5.
• 12 cm akan L / 40 – 62,600 experience – Emil II, Kranvagn.
Thus, if you do not have these tanks or guns yet, you have already saved 122,600 experience and will be able to play M103 and Emil II faster and more comfortably.