hello, I sent to my brokerage company my physical stock certificates and they were issued many years ago (at least 10 years). I sold the certificates and the brokerage company issued a form 8949 for short term gains. The brokerage company base the short term gains on the receipt of the stock to their company instead of the issuance date of the phyiscal stock . Clearly these stock certificates were stamped and issued many years ago How can I demonstrate to the IRS these were long term gains.
