Touchstone works exclusively with the book and manuscript trade — auction houses, established booksellers, autograph and manuscript dealers, galleries, and institutional clients.
We do not examine items submitted by individuals. If you have a piece you'd like authenticated, please ask the dealer or auction house you intend to sell or buy through.
Per-item examination of a signed book, photograph, manuscript, or letter.
| Trade rate | $85 · 2–4 weeks |
| Expedited | $165 · 5 business days |
| Priority (24h) | $285 · same-week reply |
Volume work for booksellers, auction houses, and institutions.
| 25–100 items | $58 / item |
| 100–500 items | $45 / item |
| 500+ items | By quote |
A written opinion without an issued certificate.
| Standard | $135 · 2–4 weeks |
| Second opinion | $215 |
| Legal / sworn | By quote |