Excellent Nagoya Type 95! The contractor stamp is the 'Gifu' stamp, believed to the the early logo of the Seki Shoten Co. You can find a brief discussion of this on page 20 of the Stamps of the Japanese Sword -
Stamps of the Japanese Sword
The yellowish coating is Almite, used in the couple years of the 95 aluminum handle. From Nick Komiya:
"This aluminium tsuka is often observed with a distinct brass/brown colouration, which is often and incorrectly mistaken for staining or patina. This is a thin layer of Almite, which was used to protect the aluminium from degradation. Once again, Nick has kindly provided an answer to the research community. Nick observes that:
"Since 1923, the Japanese had been using Almite instead of aluminum, as aluminum corroded too quickly... Unless aluminum was in this color, it was not accepted as decent quality in the 1930s.""
Bookmarks