This is a pair of glasses for Eigashima Shuzo's Shiratama White Wine. The logo "Junryo Hakubushuyu Shiratama White Wine" is engraved on the glass surface using gravure. Gravure is a traditional technique that involves using an abrasive (carborundum) on a rotating copper plate to create delicate engravings and patterns on the surface of the glass, and it means "engraving" in French. It requires advanced skill and concentration. As they are mini-sized, they are probably tasting glasses, or in other words, glasses for sampling. They are likely commemorative items or novelties for customers. Judging from the retro feel of the outer box, reminiscent of Yusaku Kamekura's posters for the Tokyo Olympics, they were probably from the 1960s, when Eigashima Shuzo started making wine in Hakushu, Yamanashi Prefecture. It is likely that Suntory's Akadama Port Wine was in mind. Unused, with box. Unfortunately, as you can see in the last photo, there is a tiny chip on the stem if you look closely.