Although your question doesn't include the important detail of its denomination, the fact that it's brass-plated indicates you have a 10-pfennig coin. This was one of the most common circulation coins up till 2002 when Germany adopted the euro. Unless it's in uncirculated condition it has essentially no value except as a curiosity. Uncirculated, it might sell for all of about 40 US cents.
Solid Brass.
Anodized (ie electro-plated) chances are they are chrome or brass plated.
They are not gold plated, they are brass. They do not contain any gold whatsoever.
Brass does not oxidize easily, and a brass towel bar if properly plated will not either.
There is an effective way to clean brass door knobs. The first thing they need is to determine if the knob is brass plated or solid. If it is plated, use caution in the cleaner that they use.
Some are, yes.
Is the fountain Solid Brass or Chrome-Plated Brass?
Brass instruments are, as the name suggests, made out of brass. They are then either lacquered, or silver plated, depending on the player's preferences.
Yes especially on finish work as Chrome plated Red brass is the right job
it is not gold, it could be gold plated or brass
in brass bangles how gold covering is plated
Ebay.com has many available.