I had AI search for availability and nada.

Public Marketplaces and AggregatorseBay Marketplace: Checked active listings for silver casino tokens and Detroit casino memorabilia. Only lower-denomination base-metal obsolete tokens from Greektown (like 5-cent, 25-cent, and 1-dollar chips) are currently listed. No 1.5 oz silver anniversary medallions are live.Mercari Marketplace: Checked peer-to-peer public listings across individual casual collectors. Lower-tier Detroit casino items appear, but the 1.5 oz silver medal does not.PicClick Collectibles: Scanned this aggregate view of worldwide eBay listings. It confirmed no hidden or miscategorized matching listings under alternative titles.Whatnot Live Auctions: Checked current bullion and numismatic livestream listings. While various alternative premium silver casino rounds are trading, this specific Detroit anniversary piece is absent.Social, Fashion, and New Peer-to-Peer MarketplacesDepop Marketplace: Scanned vintage listings. The user base leans entirely toward clothing and retro street aesthetic items rather than premium numismatic or silver bullion rounds.Poshmark: Checked user closets within the home and collectibles section specializing in vintage Americana and exonumia. Lower-value souvenir keychains and obsoleted plastic casino chips appear, but the premium silver anniversary medallion is absent.Vinted Marketplace: Checked across United States and European regional servers. While users occasionally list generic vintage coin sets, souvenir tokens, and random silver jewelry lots, no casino-issued limited rounds from Detroit are currently available.Wallapop Platform: Scanned the European-heavy secondhand collective app. No entries exist for Michigan casino properties.Major Aggregate Bidding and Portal SitesHiBid Auctions: One of the largest internet-only auction host networks used by regional estate liquidators, small-town estate sales, and local coin shops. Searched nationwide active lot descriptions with zero matches.Invaluable Auction Archives: Checked regional estate coin sales and auction records. It appears strictly as a past archived sale, with no upcoming lots scheduled.LiveAuctioneers: Acts as a massive public portal for regional estate liquidators. Scanned active coin and token sessions; historical pieces exist, but active lots are empty for this token.Proxibid: This platform aggregates thousands of live estate and coin auctions from independent auctioneers globally. A query of active catalog lots yielded plenty of obsolete casino chips, but no 3rd Anniversary silver rounds.Specialty Numismatic and Coin Auction HousesAPMEX Bullion: Searched their secondary-market vault inventory for 1.5 oz casino overstock rounds. They carry generalized generic casino silver, but this specific piece is entirely out of stock.GreatCollections Coin Auctions: A highly active specialized weekly auction site for certified and raw silver collector rounds. Zero matching items are live.Heritage Auctions: The world's largest numismatic auctioneer. They handle ultra-rare collector sets and premium tokens. Searched active signature and weekly internet coin auctions; nothing is currently live.Stacks Bowers Galleries: A premier public auction house specializing in rare coins, exonumia, and physical bullion sets. Checked active auction catalogs; no current listings.Newer Live-Stream and Digital Auction AppsDrip Live Auctions: A newer app focusing on collectible cards, estate tokens, and small bullion items. Inspected current coin seller inventories with zero results.NTWRK App: A live-stream auction app popular for high-end pop-culture collectibles and limited drops. Scanned archival and ongoing collectible seller logs; nothing matches.Cross-Border and Regional Public MarketplacesCatawiki Auctions: The leading curated online auction platform in Europe, which frequently captures global tokens and casino collection liquidations. No active lots match.