I don't think it's very popular in the JP market. However, as shown in the URL below, there may be demand outside JP.   https://griffinmilitaria.com/product/sold-duty-ship-of-the-imperial-japanese-navy-flag/

Thank you, would this flag be a good collectible worth any good?

A direct translation would be "duty flag【当直旗／當直旗】".

Can you translate the writing on it?

My personal opinion is late WWII or more likely 1950's.  You had a good amount of formation signs in WWII that were printed.  I would be happy to have one like yours in the collection.  I think mine is paper backed which were also seen in WWII...   -Ski   P.s.  British Formation Signs are a lot more complex than US made patches, I can tell you that!

I think the red flag is the “duty ship of the IJN flag”.

Thanks!

Thanks I knew it was a Catholic themed pendant but I had no idea what it's for. Any idea of value? As I don't collect religious items it will probably be for sale

The pennant: It looks like "Katholische Limburger Studenten" (Catholic Students from Limburg) to me.

Hi Gyrene and welcome to the WMF! Not my field of expertise but at least the Alphabet on the top is not German. My guess would be Scandinavian / Swedish but I have to do some more research on this.

Great looking uniform and equipment, well done. The e-tool cover may be a tough one to find, have you tried watching rbnr militaria out of Italy. He gets a lot of good items and updates daily.    Scott

I acquired this field telephone, 99% sure it's German. Can anyone tell me about it, e.g. what era it's from?