If Cincinnati's 1899 silver pass is an impossible rarity, then the 1900 "Open Door" successor can best be described as fabled, near-mythic—perhaps even holy-grail material. We have never seen another, and when this little wonder took its one-and-only turn on the auction block in 2012, the gavel came down at over $10,500.
Embossed lettering of "The Open Door" heralds a delightful raised-relief scene of a distinguished gentleman entering the edifice known as League Park. As far as is known, the sole recipient to enjoy such open-door privileges was C.G. [Curtis Gates] Lloyd—a pioneering Cincinnati botanist who specialized in the study of mushrooms, or mycology. According to the website of the Lloyd Library and Museum (named after C.G. and his brothers), "[H]aving never married, Lloyd devoted his time and energies almost exclusively to mycology. He kept offices in Cincinnati, Paris, and London and traveled extensively, examining and collecting specimens and studying existing works on mycology...Through his many contributions he achieved the role of a prominent authority, as well as being regarded by some as a leading architect of the study of mycology. Although he was opposed to using personal names for identification of mushrooms, several genuses do bear his name." As, of course, does this silver treasure, which measures 3-1/4 x 2-1/4" and rates EX condition with consistent light tarnishing. This item has a reserve (estimated value $7500-$10,000).