To clear things up, the image is an engraving rather than a photo. Photographs aren't used on US banknotes and in any case Jackson was a very old man when portrait Photography first became practical.
The bill you describe is almost certainly from the 1914 series; please see the question "What is the value of a 1914 US 10 dollar Federal Reserve Note?" for more information.
The last president on US $10 bills was Andrew Jackson on Series 1914 Federal Reserve Notes. Since Series 1928, the only person on the US $10 Federal Reserve notes, despite several redesigns, has been Alexander Hamilton, the first Secretary of the Treasury.
Andrew Jackson is on the 20 dollar bill
Andrew Jackson is on every US 20 dollar bill. So no, Andrew Jackson twenties are not rare. At all.
Yes, a five hundred dollar federal reserve note has stuff on the back.
It will read "Federal Reserve Note" at the very top of the bill.
$20
President Andrew Jackson is on the face of the twenty-dollar bill. President Andrew Jackson first appeared on the twenty-dollar bill in 1928.
Federal Reserve Note. All US paper currencies are Federal Reserve Notes.
Andrew Jackson
Andrew Jackson
Andrew Jackson
It has Andrew Jackson's face engraved in the middle, his name written at the top and the time he was president for on the bottom. If you want to see for yourself, type in "Andrew Jackson dollar coin" on Google images.