4 oz-.999 fine silver giant quarter

1999 Denver mint 124 gram/4oz of .999 fine silver giant quarter. States GA, CN, DL, PN, NJ on back. Numista gave it a 95 rarity rating. Whats the estimated value of my giant coin? Thank you. 

Welcome to Numista. Please do not confuse Numista rarity numbers with overall rarity in the marketplace. The Numista rarity index simply indicates the number of Numista members who claim to have this bullion round. Manufactured for investment purposes based on commodity prices,  it is not a coin and not manufactured by the United States mint in Denver. It was manufactured by a private mint which so far has yet to be identified.  The value is ultimately what someone is willing to pay for it. Until you find someone willing to pay above and beyond its bullion value, simply value it at todays bullion price. 

N#57127