First off I would send it to PCGS to get it graded. There are 3 different die varities and only Type 2 is worth good money. If it comes back a type 2 than you are looking at a $600+ coin easily.
This website will be very helpfull to you!
http://lincolncentresource.com/1922Ddievarieties.htmlDie Pair #2:
• Absolutely no trace of a D
• Second 2 in date is sharper than the first 2.
• All letters in TRUST are sharp.
• WE is only slightly mushy.
• L in LIBERTY butts up against the rim.
• Reverse is sharp with nice wheat lines.
Since the coin is so worn its going to be hard to make an accurate judgement. There is only a slight variety in whats mushy and very mushy and whats sharp and not sharp. The second 2 is defintly stronger than the first so thats a great start!
Like I said before send it in!