Help please with identifying shoulder boards and cap badge

[Drb1643]

I’m hoping the good members here can help me identify this set of shoulder boards and what appears to be a cap badge. Any information will be greatly appreciated!
Thank you all very much in advance.
Tom

[Nick Komiya]

Narrowing it down to the exact ID will take me too much time in the archives, so I'll just give you a hint in which areas to look for.

As for the first visor cap insignia, the closest I found was the national railways (see illustration below)

For the shoulder strap, it is from some organization of the General Government of Korea. The illustration I show below is for an instructor in the Korean Quarantine Office, but specs say they are to be on brown cloth, not dark blue like yours. Many Korean boards have that paulownia crest, but they mostly have pointy straps, not clipped like the type shown below.

Going through all uniform regs like police, customs, prison guards, foresters, etc is too much of my time, so I'll have to leave it at that.

[Nick Komiya]

Here's also a government official's (Chokuninkan) boards on a dark blue backing like yours, also from the General Government of Korea.

[Drb1643]

Nick, thank you very much. You have helped me in the past several times and I sincerely appreciate your time and expertise.
Tom

[Nick Komiya]

Now I've got a fix on the boards with matching specs.

[Nick Komiya]

Here's what the Korean version of the railway insignia looked like.

[Drb1643]

Thanks again Nick, you are the best!

[Nick Komiya]

And this is the insignia for the Tokyo Transportation Bureau, which appears to be part of the cap insignia.

[Drb1643]

That insignia for the Tokyo transportation bureau looks like a perfect match.
Thanks again Nick.