Did you donate them to a qualified 501(c)3 registered organization? If not, they're not deductible. If you did, then you would need a qualified appraisal to claim them so you can 1) Prove you owned them, and 2) Prove their value. Also, if the total of all your donations and deductions does not exceed 7% of your AGI, claiming them will have no effect on your tax liability.
