Miroku may be the maker.
Impossible to answer without the maker's name
Features and markings.
Impossible to answer without knowing the name of the maker.
Impossible to answer without knowing maker's name.
No way to answer without a maker and serial number.
Not unless the maker says it is safe
$50-$75. Maker is Hermann Weirauch.
Can't be answered without more information
Contact the maker
Ask a gunsmith for help, contact the maker and ask for a manual.
Herter's was an importer, not a maker. Take it to a gunsmith