There was not an 1803 Indian Head coin made.
The 1803 Large cent had a depiction of liberty wearing a headdress with "LIBERTY" on it called the Draped Bust Large Cent. If the coin grades a Good it sells for $40.00 - $75.00 depending on your coin market. A high uncirculated grade would fetch $3,500 - $15,000 depending on specific grade (higher if full RED).
Assuming you mean a U.S. Indian Head cent and not a British penny, 1900 is a common date for Indian Head Cents. In average circulated condition it's worth $1.00-$3.00.
The 1946 price should be close to the 1947 Red Book value of $1.50 for a uncirculated 1900 Indian Head cent.
Average retail value is $1.00-$2.00
Wheat pennies were not made until 1909. In 1900 the pennies were Indian Head Cents. A 1900 Indian Head cent would be worth about $1 in Good condition (good condition is the fourth worst condition possible).
The 1900 Indian Head cent is very common. Values for average circulated coins are $1.00-$3.00.
There is no such coin as a Indian Head Buckwheat penny, but a 1898 Indian Head cent in average condition is worth $1.00-$3.00
An 1896 Indian Head Penny in good condition is worth $1.35, in fine condition is worth $2.00, in uncirculated condition is worth $30.00, proof is worth $150.00.
1869 Indian Head Penny: In good condition is worth $45.00, In fine condition is worth $175.00, uncirculated is worth $400.00, proof is worth $550.00.
1900 morgan silver 1886 indian head penny
Most Indian head pennies of 1909 are worth between $2.00 and $10.00. However, if the penny is an 1909 S Indian head then it would be worth between $400 to $600 depending on the value grade.
An 1896 Indian Head Penny in good condition is worth $1.35, in fine condition is worth $2.00, in uncirculated condition is worth $30.00, proof is worth $150.00.
It is worth $1.00. Check on (about.com)Indian head penny