I believe all Nazi 5 mark coins are 90% pure silver.
Though I think some of the earlier, larger, 5 mark coins are struck in debased silver (I've seen both 63.5% silver and 50% silver listed)
900 silver coin
Depends on the condition of the coin- but at leat $6.06 for the silver content as of this morning.
About $5.50 for scrap silver. It is a common coin worth no more than bullion content.
You didn't describe the images on the coin, but if it carries a picture of Paul Hindenburg and a Nazi swastika, your coin's value as of 06/2008 is roughly: $8 if it has an A mint mark $10 with a D or J $12 with any other mint mark
it all depends on the silver content. silver today costs about $16.00 per ounce. be sure to look at the mint mark. if the mint mark is a w, it can be worth thousands of dollars.
The mark for sterling silver is 925 which indicates 92.5% silver content.
in order to tell for sure, you would need to take it to a coin specialist. most coins now are a mix of zinc and copper. if your coin truly is silver, it is probably very very old and worth a good amount of money.
When selling to a collector, depending on such factors as date, mint mark, condition, and accuracy of the striking, a silver dollar can be worth any where from $16.00 to over $50,000.00. When selling the coin based on weight and silver content, the coin is only worth the market value of silver on the day you sell the coin. Most U.S. silver dollars which were struck for circulation have a 90% silver content. Also, dollar coins made for circulation and dated 1971 or later are not silver. They're either copper-nickel or brass.
No mint mark indicates that the coin was minted in Philadelphia.
A-Mark is also known for producing high-quality bullion bars and rounds. For example, a-Mark released the Liberty Bell Silver Round. This coin predates the Silver American Eagle and the Silver Canadian Maple Leaf, and it has held a prominent place in the world of silver investors for decades.
By the mint mark on the reverse of the coin, but silver dollar coins with no mint mark are made in Philadelphia
The mint mark (if it has one) on all Morgan (1878-1904 & 1921) silver dollars is on the reverse of the coin, just above the letters "DO" in dollar.