We cannot see you rare coins. Since we cannot even see your rare coins, we do not even know if your coins are indeed 'rare', what they are, their condition, when they were made - we do not know anything. Please specify in a different question what your coin is, the date it was made, and the condition it is in.
in the 1800s are rare.......the Red Book tells you all kinds of rare dates
It depends on what you think a lot is and which US coins that have Indian heads on them you are asking about?
1892 is not a rare or even scarce date for Indian Head cents, coins in average circulated condition are $1.00-$3.00
not at all
a 1920 buffalo nickel is worth about 2.50 because it's not that rare
If you mean Indian Head cents? Some of the more desirable dates are: 1909-S, 1908-S, 1886, 1877, 1864, 1860 and 1859.
A 1898 Indian head penny in circulated condition is worth 1 to around 23 dollars in circulated condition. These coins are not rare.
I bought most of my rare coins at auctions.
Yes, there are rare coins from the Bahamas. One of the coins is a 1991 Bahamas gold coin where only 500 of them were made
No coins in 1949 are rare, but as with all US coins, high grade Mint State examples can be valuable.
There are a lot of differences between Greek coins and Indian ones. Get a book about world coins, and you can learn a lot about how to identify coins.