The bottom of the tank was affected by the major corrosion and hasn't been repaired in a truly thorough manner, using thick layers of brass (the surface also shows many dents, it was probably crashed as well). Today, we simply cut these parts off with an angle grinder...bye bye
looks like a beginning of the new adventure...
prior to that, I used this handful of screws and nuts in order to get rid of inner rust. After proper shaking and pouring out
what fun!