pure nickel coins will stick to a magnet like canadian nickels also if you have a nickel coin with some other alloy lets say copper and an aluminum coin usually aluminum coins are really much lighter in weight also aluminum coins are extremely light weight
like banks say fran-ks. but its just spelled as francs. It is pronounced as fran-ks.
very rare, they use euros now. depending on the condition, it could range from 8,000 to roughly 15,000
The 1858-1947 Max Planck commemorative coin doesn't have a set price as it depends on factors like condition and rarity. You may need to check with numismatic experts or browse online marketplaces to get an estimate of its value.
It most likely was dated 1966 but it got a little faded and it just looks like 1366.
What Does Aluminum atom look like
Please post a new question with the coin's denomination. Also look for a small letter like an A, D, G, etc. somewhere on the coin. That's the mint mark and could be important to its value.
It was like 6 years ago (2002)
I couldn't find an image of a 1943 coin but the same design was used in all years of issue with only minor variations. There's a picture of a 1947 coin in the link posted to the left.
The kind of copper that looks like aluminum is tinned copper.
coin like the penny is a coin.
To describe a coin, assuming you can't read the Chinese, you would give a couple of pieces of information. Number one would be the composition, is this coin bronze, silver, gold, aluminum, steel? Number two would be the weight. Number three would be the diameter. And number four would be what the coin looks like, does it have a hole in the middle, a picture of someone, etc. If you are on a site that you can send pictures, put up pictures of your coin.