Gold is 1660 per oz on 5/1/2012 Multiply the current gold price 1660 by 0.242. This gives the melt value of the coin. = $400. To the melt value add about $100 to account for the numismatic (coin collector) value. $500. That is retail. Expect an offer between 70 and 90%. 70% is $350 90% is $450
A 1909 Half Eagle can be worth well over $500.00
A 1884 $5 gold coin (aka - Coronet Head Half Eagle) is worth in fine condition (F12): $250; a 1909 $5 coin - aka Indian Head Half Eagle - is worth in extra fine condition (EF40): $425.00.
I would say 50 cents...unless 1909 is a super rare year in coin collecting or something. Then it could be worth a lot. But don't take my word for it.
The mint mark for the 1909 Half Eagle is located on the reverse {eagle} side of the coin just to the left of the arrow points.
With a date of 1909, it can't be a Liberty Head Quarter Eagle, last year of issue was 1907. Look at the coin again and post new question.
The US Mint does not make "Baby Eagle" half dollars, please rephrase question
The 1909-D Indian Head Half Eagle is the highest mintage of this series. 3,423,560 coins were struck.
Both the 1909 and the 1909-O (the mintmark if any will be on the back of the coin under the eagle) are better date coins. The 1909 is worth about $8 if worn, and the 1909-O is worth about $15 if worn. The Barber series is filled with condition rarities where even common dates can be worth hundreds of dollars if uncirculated. Without seeing your coin I can't give a full value, but in better shape both the 1909 and 1909-O can be worth $50 or more.
You have a Coronet Head $5 Dollar Half Eagle. If it has a (CC) Mintmark and in good condition it could be worth thousands. Double Eagle = $20 Eagle = $10 Half Eagle = $5 Quarter Eagle= $2.50
This coin in fine condition is worth: $ 250.00.
For the 1909 Indian Head Half Eagle ($5) coins, mintmarks are located on the reverse, between the rim and the tip of the arrow heads of the bundle of arrows the eagle is standing on. They are very small and can be a little hard to see.
It's worth 50 cents.