Collectible investment character

Some rich people or great man collects unusual goods as their fan. They dare to spending million dollars for the collectibles and they also dare to go everywhere for hunting collectibles. There is a satisfaction to see the collectibles in leisure times. They also are pride to show the collectibles to other rich man and colleagues. The Rich people collect some collectibles and antique things such as art, coin, painting, stamp, baseball card, basketball card, ring, and others. These things can be an investment like other assets. However, you should know the character of collectibles. Those collectibles character like this:  No one know the value exactly Collectibles is different with the gold price. People know that a troy oz gold is around $ 1,500 but they do not know the price of collectibles gold coin. The gold collectibles usually more expensive than the common gold coin. The old gold coin has historical value.  For example, I will not pay a babe Ruth basketball card even for $ 1,000. I am not a basketball collector and I do not know what baseball is. To me, buying a basketball card is not profitable investment.   Not Liquid  The collector cannot sell the collectible anytime like selling stock or ETF. The collector should find the right buyer to get the right price. Only crazy collectors who want pay your collectibles over many times. Alternatively, you can sell through bid house. You have to pay to the house first. Perhaps the rich people will buy at the bid house. On the bid house, the rich may buy the collectibles high but sometimes they buy cheaply.   Alternatively, you can sell the collectibles on online such as Amazon or eBay. I saw there are so many collectibles on eBay such a coin, stamp, art, and others.  This is the weakness of collectible investment. That is why rich man should not put all money to collectibles.   Few demand and market  Only rich man or antique shop that want to buy the collectibles. There is few collectibles market.    Long time investment  Collections is a long time investment that can generate revenue for long time. If you save for long time, it prices could be multiply over many times. This investment is not suitable with common people who want short term return.   There are so many fake collectibles
A bad people often imitate the collectibles to get much money. The imitation process is sophisticated so the collector often are fraud. 
Fragile  The collectibles often fragile due it is old. The collector should maintenance the collectibles. For example, you should polish the coin.

Investment in Collectibles

Collectibles may be not a good investment recently due to the crisis economic. People avoid buying luxurious things including collectibles because they need money for other important needs.
If you have so much money, you can buy some collectibles. When the economic recovery, you can sell the collectibles at high price. There are some collectibles that you can use as long term investment, such as:
1. Coin
The coin has been used by Roman Empire before Christmas born. The Ancient Greek also used the coin as the transaction tools. The oldest coin is found in Lydia, Turkey. Along time ago, people use precious metal such as gold and silver as the coin material. The coin was a valid payment at that time. People can buy cattle, cloth, crystal glass, with that coin. Some coins were also made by cupric.
Some collectors keep the coin for their collections. The old and rare coin price is so expensive far from its nominal value. 
United States also old gold coin.
2. Weapon
Some weapon has history value. There are so many antique weapons from middle ages to civil war era. The collector find Flintlock riffle that was the modern riffle in the era. Some colt or revolver from 18th century or Wild West era is a good collectible too. Some country forbids the firearm collection you need to get permission before collecting firearm.
The sword is also famous collectibles too. Most swords were used by important people or famous people. In my country, the old sword price is so high. Only
3. Stamp
British was the first country that use stamp for post service. The oldest stamp in the world is British stamp.
4. Money
Paper money is also a good collections. Keep the paper money in money album. The old money price is expensive too if you can keep the conditions of the collections. 
5. Painting
The old painting that was made on middle age is very expensive. Its price could reach million dollars. Some famous painter also creates million dollar painting. 
6. Sport Card
United States print card for basketball and baseball. The card contain the information about the player and his photo. The famous player cards worth million dollars such as Babe Ruth Baseball card or Shaquille O'Neal basketball card.
If you got the uniform, you can keep it. Someday, you may sell it to the collector or fans. The uniform must be expensive if you sell it to the collector.
Some player also has winner ring that is very valuable.
You can collect some antique things for long term investment. You must remember that the collection is not liquid investment. We can sell it when we meet the right buyer and we cannot sell anytime we want.