2018/6 (from Why do pens disappear? )
2019 (from What we use )
The ballpoint pen I carry is a LAMY, but the contents are [refill adapter https://www.amazon.co.jp/gp/product/B00R2HP79I/ref=as_li_ss_tl?ie=UTF8&psc=1&linkCode=sl1&tag= nishiohirokaz-22&linkId=a037692597a3a314551188295454b71f&language=en_JP] and is a Jetstream SXR-89-07.
Refill adapter to attach Jetstream refills
2022-09-11

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