Published November of 1981, BOTTLE: Hiction & Illustration An anthology collection of Mecha themed BL works by both Fujoshi and Fudanshi under the circle GLASS. This circle was seemingly founded in 1980 or so, though their activities are relatively undocumented. I acquired this volume among others from a former parody manga artist who sold them to me among birthday invitations and private gathering announcements by his friends at the time. This work in particular is extremely rare and hasn't been seen on the web at all. This work features a unique amalgamation of cross referenced events and advertisements for equally rare and lost anthologies as well.
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Additionals:
You can read more about the artists who contributed, how I acquired this work and more historical context on fudanshi (queer and otherwise straight) in my criticism:
On Fudanshi: Image, the Subversion of Mecha and Queerness in Post-War Japan