According to CoinStudy's 2014 price guide, a 1900 Indian head penny is worth between $1 to $28, depending on its condition. A completely uncirculated 1900 Indian head penny in pristine condition may be worth over $100.
The most valuable 1900 Indian head pennies still have sharp, defined engraving features, unworn edges and a dark red and brown tone. A 1900 penny in extremely fine condition is mostly unworn, although dulling of the detail is present. Pennies in fine condition may no longer have some of the feather details. Those in good condition lack defining features of the feathers, face and neckline.