I looked it up in the USPM Catalog and it shows $15.00 in F, $30.00 in XF so your somewhere in between there.
Back during the production of Series 1928 A and Series 1928 B the seal color changed from a darker green to a lighter more vivid green or what is called an "apple green" seal and SN color. The Seal color that followed on the Series 1928 C and Series 1928 D (both, which are rare notes) will always be found in only vivid or apple green seal color! It is believed that the $5 notes of Series 1928 C from Cleveland and San Francisco were destroyed shortly after Pres. Roosevelt's gold recall order in 1933. Only $5 Atlanta notes are reported for the Series 1928 D. There are $10 and $20 Denoms available but no $50's or $100's were made for these Series. It is noted in Hessler and Chambliss Book that in the past 75 years, there has been significant variations in the shades of which these features are printed! Hope this explains some what for you. RickieB