Can't be answered without a detailed description of all markings, finish, condition, accessories, box, papers, etc..
1.7524217 German Deutsche Marks
$85
As of today, the German mark is no longer in use as Germany adopted the euro in 2002. At the time of conversion, 1 euro was equivalent to 1.95583 German marks. Therefore, 500,000 German marks would have been worth approximately 255,000 euros.
about ten cents in both p and d mint marks unless it is proof then it is worth about four dollars.
50-1000 usd
No such model made by Browning.
A Browning A-500g shotgun in excellent condition is worth about 900 dollars.
It would depend on the date and condition of the note. In anything but very good condition, it is probably worthless.
The 1979 German 2 Pfennig is worth about 2 dollars depending on its condition. Some of these coins can be more valuable including the 5 Pfennig coin.
Impossible to answer without a detailed description of the Browning you are referring to.
No such weapon made by Browning.
A browning 351MN0117 rifle costs between $500 and $1000.