「越前國」是日本眼鏡聖地福井縣的古名，而「甚六」則是作為鯖江市眼鏡職人的製作者長谷川正行對其父之名的致敬。
長谷川正行在中學畢業後便投入眼鏡製作成為眼鏡職人，至今也製作了無數的鏡框，創立了品牌「越前國甚六作」，並在設計師米谷成師的「嶄新設計」與「傳統技術」結合下，製作出不同風格與類型多元化的鏡框，令越前國甚六作的出品深受一眾手作眼鏡愛好者的喜愛。
它其中一個亮點是以賽璐珞製作眼鏡。賽璐珞在經過手工拋光之後會呈現如龜甲般迷人的色彩與光澤，此素材票要長時間乾燥，現在只剩少數品牌仍然選用。
“Jinroku” is a tribute to the name of Masayuki Hasegawa’s father, who was a eyewear craftsman in Sabae City. Jinroku is renowned for mastering the handcraft of using celluloid, metal and acetate all at the same time.
After graduating from high school, Masayuki Hasegawa became an eyewear craftsman and has since produced countless frames. He established the brand “Echizen Jinroku Saké” and, in collaboration with designer Seishi Mitani, combined “innovative design” and “traditional techniques” to create a diverse range of frames in different styles and types, making the products of Echizen Jinroku Saké popular among handmade eyewear enthusiasts.
One of its highlights is the use of cellulose acetate to make glasses. After being hand-polished, cellulose acetate exhibits a charming color and gloss similar to that of a tortoise shell. This material requires a long drying time, and only a few brands still choose to use it today.