Only one-sided Specimen Printings are known:
1. Front with printed signatures of Colby and Spinner
      Narrow Margins $100.00 | Wide Margins $275.00
2. Front with autographed signatures of Colby and Spinner
      Narrow Margins $1,500.00 | Wide Margins Unknown
3. Front with autographed signatures of Jeffries and Spinner
      Narrow Margins $150.00 | Wide Margins $250.00
4. Front with autographed signatures of Allison and Spinner
      Narrow Margins $175.00 | Wide Margins $275.00
5. Front with no signatures
      Narrow Margins Rare | Wide Margins Very Rare

6. Back of Variety 1 (printed in green)
      Narrow Margins $80.00 | Wide Margins $175.00
7. Back of Varieties 2-5 (printed in red)
      Narrow Margins $50.00 | Wide Margins $150.00

This type was never intended for circulation because of the fresh law that prohibited the portraits of living persons from appearing on United States currency (see the Five Cents Fractional Currency with Clark's likeness).  All of the Sherman/Grant notes may have been printed as wide margin Specimens, but many were trimmed and placed on Fractional Currency shields.  This may explain why Variety 2 is unknown as a Wide Margin specimen. 

Some Specimen notes were printed on blank paper captured from Confederate blockade runners during the Civil War.  Prepared for the Confederate States of America for use on their currency, this paper features a distinctive "CSA" watermark.  Parts of the watermark are often visible on Specimen notes.