Mint Silver Proof Set Original Mint Sealed Cello. Mint Silver Proof Set with original box & tissue. These coins are uncirculated, and Mint sealed in the cello packaging. Please refer to photos for condition. You will not be disappointed! Please take a look at all of our auctions, We specialize in Rare Coins, Estate Jewelry & Antique Silver from important makers, as well as other antique and unusual pieces! Get Supersized Images & Free Image Hosting. Auctiva gets you noticed! Track Page Views With.