(Duplicate listing from ebay) "Coin Glass" souvenir from the 1893 World's Columbian Exposition at Chicago, a close reproduction of the design of the 1892 Columbian Exposition Commemorative Half Dollar done in black pressed glass, 20mm diameter.  The NGC label shows this as E-57A; the new Columbian Expo reference by Steven Starlust has re-catalogued this as STND-57b, as a design not listed in Eglit.  The listed Eglit-57 refers to a uniface, 19mm design.  "Coin glass" was produced by the United States Glass Corp., using designs of U. S. coinage in pressed glass objects; the original pattern was known as "Silver Age".  Unfortunately, the United States government judged this to be illegal due to the replication of Legal Tender coinage designs.  I guess they worried that (somehow) people might get "confused" between a U. S. Silver Dollar made out of Silver, and an image of one pressed into a glass lamp, pitcher or plate - go figure.  The glass company changed designs on their products to use somewhat generic images of what could be considered "coins", in order to avoid issues with the Treasury.  The piece offered here has a clouded history of origin and little is known about them.  It may be unrelated to the U. S. Glass material, however it clearly falls under the area of concern of the government, as it is a virtually exact smaller size copy of the Columbian Expo Half Dollar struck in 1892.  This likely explains their scarcity, as the Treasury swooped in quickly to stop sales of any material that was similar.  Only three E-57A certified at NGC, all MS-64, and a single "E-57B" in a slightly larger size at 24mm (MS-65).  An ebay listing from 2022 of one of the other MS-64 pieces indicates that the (Owens) Corning Glass Museum has a similar example.  A number of other examples exist in raw, uncertified form, per personal communication with collectors of the material.  The last two images provided are of the small wire frame that originally encompassed this piece as sold, indicating that these were originally meant to be sold and worn as jewelry (per Starlust).  The 2022 ebay MS-64 example was listed at $5,000 - I believe it sold at something less, as the seller indicated he would consider offers.  This is the only sale listing that I could trace of E-57A.  The Heritage archive shows no sale for E-57A, however the sole NGC certified E-57B sold there for $5,520 in August of 2023, so perhaps that other listing was not too far off the mark.  Discussion with Mr. Starlust also indicates that a value between what I have this listed for and the Heritage "number" might not be out of the realm of reasonable for a serious collector of the material.  Out of an old time collection where it was hidden for about a half Century - interested parties are welcome to contact me to inquire.  Please be aware that I am in no huge rush to dispose of this, as it adds "flavor" to my Exonumia displays, so offers that I deem silly will be roundly ignored.  Please note that due to value, this will probably require Registered Mail shipping (cheaper than Insured First Class), which is slower delivery time.  Please take this into account prior to considering a purchase.