Examine the surface texture under raking light. Originals show brushstrokes and paint buildup, while prints appear flat and uniform. Check edges for plate marks on etchings. Our AI can often distinguish these from detailed photos.

Yes, significantly. A verified signature can multiply value many times over. However, unsigned works by known artists still have value. Clear photos of signatures help with authentication and valuation.

Include photos of the front, back, signature, any labels or stamps, and frame. Provide any known history, purchase receipts, or previous appraisals. The more context, the more accurate our valuation.