How should I clean my old coins without destroying their value?
84403
Don't clean them, this will void them of any value. Believe it or not, old, dirty coins are worth a lot of money!\n\nAlso don't handle them a lot, the oils from your hands will get them more, for lack of a better word, "corroded". Put them in acid free protectors.
428018
Well if you know how old they are they maybe worth more then what you pay for them. My advice is you need to look it up on some web site find the name of the company or who made it and look up some back ground on it you never know might be realy old!
401785
Your best bet is to try to sell them on eBay.  You will get prices closer to the current market value, but it is a lot more work.  The easiset way is to find a coin dealer in your area, but realize the dealer is in business to make money, so he will offer about 40-60% of the current market value for the coins. He is not cheating you, that is just the typical amount dealers are willing to pay for coins.  If the coin is a rarity, then he will pay closer to the market value.  Good Luck!
197747
take it to your local recycle place, are gives you a few bucks for it... you can call your recycle place to see how much you can get for it...
1182182
You don't have to be original at swap meets.  Go to one and find the hot item there.  Then make it better yourself and sell it at the next swap meet.
357587
Find some collectors of misprint currency. Many of them will pay quite a lot of money for things like this. Upwards of 300+ dollars is not unheard of. If nothing else, keep it.
221510
I have them all and I've noticed on certain coin websites that the prices for them are going up.  Of course it wasn't my intention to sell them after I saved them but I guess a full collection, which they end in 2008, would be worth something.  I just never have collected anything before.
7643
The first place I usually send people is to Wildwinds.  It has a large collection with a searchable database.  You can start by picking out things from your coin, such as an inscription or an item.  Some links will also help you get an idea of the value.\n\nThomas Talboy, PhD, Director\nUbiquity International, LLC\nExperience. Explore. Embrace the World.(TM)\nhttp://www.ubiquityinternational.com
572841
Check a coin book. It will tell you what its "worth", then, when you take it to a coin dealer, he will give you "half as much", (he has to make a profit)...\n\nSo I would put it on ebay, once you find out what its worth, if you want to sell it, and put a minumum bid on it. That way, you will 'KNOW' that your going to get what you really want...\n\nAmmendment, I am guessing its an indian head penny, and they arent worth too much, maybe a few bucks at the most...\n\n\nI wish you well...\n\nJesse
446562
Flip them. If they ring, they are pre-1981. Alternatively, drop them one by one onto a hard floor. Again, if they ring, they have the higher copper content.
404969
Use a flat knife with no ridges, and be careful!\nSlide it through the coin slot and flip your bank upside down.\nI have a beautiful glass piggy that was my sons at birth and didnt want to break it, I managed to get out a good majority of the coins this way!\nGood Luck! :)
271584
At this point you do not need an answer.  What you need is a more specific question.  You might want to look closely at whatever it is that you have for things such as denomination, date, signatures (if currency), mintmarks (if coinage), size ( if it is currency), design and other things like that.  Then someone, maybe even me, will be able to advise you properly whether you can get a book with values in it (which will mean that you understand how to place a grade or state of preservation number on each piece of old money).  The main thing is to never, never, never ever clean it.  Cleaning old money destroys the collector value and interest.  Good Luck, Vox
441894
It may be worth more if there is something special about it, like a typo.  I would check with a rare coin dealer.
940191
Return them to nature, bury, burn or make them an offering to a river or the sea. \nPeople buy old religious prints and statues on eBay but you can't know how they'll be treated or what they might be used for, if you don't really care about this you could make some extra dollars.
730990
You would have to take it to a coin dealer to find out. They can grade its condition and look it up. Chances are, it isn't worth more than 25 cents, but it is worth at least a penny!
651168
Sounds cool, try this site\nhttp://www.coinsite.com/\n\nThere's a place where you can search "coin errors" and find out what they're worth.
124405
Not right now. Those are still in circulation. You need to wait a few more years, decades even-- and at that those bills will only be worth a higher value if they are in mint condition.