the tax form you must use is form 8283. you need a formal acknowledgement form the charity. you need to know if it's a 30% charity or 50% charity. check the IRS website below.
https://www.irs.gov/charities-non-profits/tax-exempt-organization-search
complete section B of the form if the value is over $5,000
then you must get a written qualified appraisal from a qualified appraiser. see 8283 instructions for the requirements of the appraisal/appraiser
https://www.irs.gov/pub/irs-pdf/i8283.pdf
a copy of the original appraisal must be sent to the IRS. A PDF won't do. You can still e-file, however, because form 8453 should be complete by Turbotax with the 8283-checkmark box completed. read the Turbotax instructions for mailing it with a copy of the 8283 and appraisal. failure to do so will likely result in rejection of your e-filed return. alternatively, you can mail you return with the appraisal attached to the IRS. Be sure to use a tracking method.
