Thank you for viewing. This is a No. 4 black telephone (Hitachi, Ltd.). It has been serviced by a repair service at a consumer electronics store (for black telephones) to allow it to be connected to a modular jack (service fee: 30,000 yen). The following services were performed: ① Dial adjustment (return speed, contacts) ② Bell ringing confirmation ③ Contact cleaning ④ Modernization for line specifications (modularization or conversion) for sale. It can make and receive calls on dial-up lines. It can receive calls on fiber optic lines (eo Hikari, SoftBank Hikari, etc.). ■ It will be shipped in a polished condition, but please understand that there may be some fading, unnoticed scratches, and minor scratches due to aging. Damaged parts have been repaired. Please understand that this is an antique with age-related wear and tear. The manufacturing period of this unit is estimated to be from around 1958 to 1963 (Showa 33 to 38) based on the following: • The full-scale mass production period of No. 4 telephones • Made by Hitachi, Ltd. with a paper label • Has the Denden Kosha mark (post-war, before privatization) • Consistent with museum and actual material data from around 1960. Confirmed with photos via chat GPT. ✳︎ Items other than the black telephone are not included.