Vintage TOYO Hashimoto NO. 665 65mm Japanese Straight Razor
It looks it has never been used, and it has still paper case in mint condition (the box describes NO.666, so it might be different model box).
It might be around 1960s to 1980s Japanese straight razor made.
The blade length: 65mm (2 9/16 inch)
The total length of the razor when it opened: 240mm (9 1/2 inch)
The shoulder width of the blade: 6mm (3/16nch)
The width of the blade: 21mm (13/16nch)
The total weight of the razor: 1.8oz.
Made in Tokyo, Japan