Japanese submarine badge

[DRB 1643]

Hi all, 

i would appreciate any comments on this badge. The only ones I've seen have a brown enamel finish. I'll add another photo in the next post.

thank you.

Here's a picture of the case.

thanks

[JapanX]

Original badge in original case.

[DRB 1643]

Thank you JapanX for your input.