Help with naval proficiency case ID

[DRB 1643]

Hi all, can someone please help with identifying this case and what proficiency badge it would contain.

 Thank you all very much,

Tom

[JapanX]

This is a case for a very rare  badge.

操舵優等徽章

Steering  [of a ship/submarine] superior class badge.

[DRB 1643]

Nick,

Once again thank you very much!

Tom

[DavidS]

Here's are photographs of the badge & case

 

[JapanX]

Yes, only "emergency" and "сrow's nest" can compete in rarity contest with  this beauty  

Edited May 13, 2019 by JapanX

[DRB 1643]

Ok Nick and David, thank you both for your information. Here's another proficiency case but it's different construction. It has a latch instead of push button and has a flat lid instead of domed. Is this a later period case?

 Thank you all in advance,

Tom

 

IMG_0367.HEIC

IMG_0369.HEIC IMG_0366.HEIC

Edited May 13, 2019 by DRB 1643