You're purchasing a 1988-D Silver Dollar Olympic Us Mint commemorative coin.  The coin has been certified by the ICG grading service and is in MS67 condition.  The coin weighs 26.73 grams and contains 90% pure silver.  

Please note my 2,815+ flawless transactions and 100% feedback rating over 21+ years of sales.  Purchase with complete confidence.  If these items are not as pictured and described you will receive a full, friendly and prompt refund.
In the highly unlikely event that you are dissatisfied in any way kindly let me know so that I can solve the issue.