Imperial Japanese Navy Type 2 Aviator Helmet

[Gunbatsu]

Hi! Good day... Gentlemen, I would really appreciate it if someone can help Me on the Kanji translation on the IJN flight helmet I.D. Tag please. Your help will be greatly appreciated thank you.

[Gunbatsu]

[adachi]

The issue and size info is essentially faded beyond recognition. It's from Yokosuka Naval Depot. The tag below says "Nagata Shop".
On the back of the flight helmet it says "Senki Yamaguchi".

[Long Shot]

Paying $265 for that on Ebay was a steal

[Gunbatsu]

Adachi, Thanks! Man... I really appreciate the helpful translation. Again thank you.