Meritorious Member Badges of Navy League/海軍協會 有功會員徽章

Interestingly this badge is absent from the official badge chart of association that was published in 1939 https://asiamedals.info/threads/membership-and-merit-badges-of-the-navy-league-official-chart.23263/
So it must be introduced after 1939.

Early badges.




Reverse

有功會員徽章 - Meritorious Member Badge

海軍協會 - Navy League

Made in heavy metal with hot enamel.



Original case.



All known badges (both early and late war types) were made by Taishodo workshop in Tokyo https://asiamedals.info/threads/badges-and-other-products-of-taishodo-watch-shop-tokyo.15302/
The other possible manufacturer of these badges could be Akiba workshop.



Inside the case

昭和十六年十月二十五日 - October 25, 1941

お受 - received

Looks like early badegs were issued (at least) until autumn 1941.

 

Lodgment material variation.



Badge. Loos like some simple soul was testing it for gold.



Another cased example.

 

Late war badges.

1st variation.

Alluminium alloy and paint instead of hot enamel and base metal.

Original case.

Another example of 1st variation.



Inside the case label of Taishodo workshop.



Close up of "painting".

 

2nd variation.



Case (note the change in geometry of the case and size of insciption on the lid).

 

3rd variation.



Original case.

 

4th variation.

Taishodo label inside.

 

Another badge from the same workshop from the very same time period.