With a micrometer (caliper) To measure the thinkness you use mm's
Silver coins are measured by weight in grams.
Newtons
A newton - or a millinewton.
Coins are not cylinders. The rim of the coin is sometimes raised, as well there are depressions and peaks from the design of the coin. You should use a specific gravity test with water and a scale.
No, you do not clean coins. Cleaning coins will only damage their value. If you feel you must clean a coin, take it to a coin dealer and see what he recommends to clean the coin, however, they will recommend you not to clean it. Coins potentially worth hundreds of dollars have been brought down to selling them for scrap because people have cleaned them! Do not clean coins!
You don't. You don't EVER clean a gold coin and you don't clean a silver coin. Cleaning ruins the value of coins! If it has any collector value at all it will be demolished by a cleaning. Cleaning can take a $100 coin into a $10 coin. It will never, ever improve the value of the coin unless you literally dug it out of the ground. Do not clean coins.
No, you do not clean coins. Cleaning coins will only damage their value. If you feel you must clean a coin, take it to a coin dealer and see what he recommends to clean the coin, however, they will recommend you not to clean it. Coins potentially worth hundreds of dollars have been brought down to selling them for scrap because people have cleaned them! Do not clean coins!
lemon juice will clean a coin great. But don't use it if the coin is valuable or collectible, that will lower the value. hope this helps. Brian
Broadly, one should not clean a coin. I do not suggest the cleaning of ANY coin. 99% of the time it does more harm than good to the coin.
no
You don't. Cleaning a coin can do nothing but make them lose value. Cleaning a coin easily decreases the value of any collectible coin by half.
Unless you are an expert, don't attempt to clean the coin. Many cleaning products are too harsh and will strip away the coating on the coin or scratch it, thus depreciating the value. It is best to just leave them as they are.
If you have a coin of any value - DO NOT CLEAN YOUR COIN. All cleaning products are either acidic or abrasive and will damage or destroy the finish of the coin. If you have a coin that is of no particular value and you just want it to look shiny, use a jewelery cleaner or a soft drink.
Your thumb, covered by a clean cotton glove.
Micrometer.
Yes