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JesJu
4 months ago

Hi,

that looks more like copper.

Yes brass or copper can be polished.

There are polishing pastes at Rossmann, Müller, DM.

The silver in the interior could come from brazing (solving tin).

LG

Jo3591
4 months ago

This is brass, but the part is old and old parts should also be viewed their age. When you polish it, it loses its charm and is thereby devalued.

Nudist17
4 months ago

Yes I do not polish it and it looks like brass or copper

alterzapp
4 months ago

Yeah, that should be brass. There are many polishing agents for such horns and trumpets.