Fifth edition of the Official Red Book (A guide book of US paper money-2016 edition) gives a value of your Series A (Atlanta) bill as $125 in EF-40 and $225 in Unc. Of course a better indication of your bill's value might be found in the Completed Sales (or Transactions) section of Ebay--not in the Listing (asking) prices.
Don.....
I noticed this was your very first post Aramey - so, Welcome Aboard! You didn't list your state (or country) in your profile. So, you might consider jumping over to Sub-Forums: Select Your Area.... and selecting location information (i.e., clubs, hunts, finds, legends, maps, etc.) directly related to your state (or country).
The 1950 Series A $100 bill was issued by 12 different federal reserve banks; and ten of those also issued STAR notes. So, when looking for comparable sales, make sure you are looking for the Atlanta federal reserve note (288,000 of those notes were issued.) And while 288k were issued, ten times that amount were issued by the New York bank but the values are still the same. In the future, the values should 'separate' due to rarity, but, as yet, they are the same.Note: The most valuable note of that series is the Dallas STAR note: $550 to $1,500 based on EF-40 and Unc.-63 condition.
Don......