Vintage PETER HAHN Meister Ross1980 3/8 INOX Blade Razor Solingen, Germany
I do not know anything about the razor, but it looks high quality high class Solingen razor. There is NICHIRI name on the gold paper tag, so it might be made for Nichiri which is one of largest barber equipment supply wholesaler in Japan. It is a new condition, but the blade width is little bit narrower than regular straight razor.
The blade length: 74mm (3 inch) The total length of the razor when it opened: 230mm (9 1/16 inch) The shoulder width of the blade: 3mm (1/8 inch) The blade width: 13mm (1/2 inch) The total weight of the razor: 1.0oz.