Hello again. I have just acquired a Swedish Model 1907, chambered in .380. I know the history of the gun, that upon importation into the US they were re-chambered to .380. My rig came in an original holster with a total of three magazines. It is a 2nd Version, Serial Number 27932 (all matching) and is marked on the slide:

What I can’t seem to find is what unit it belonged to. It is marked IFK No. 32. I know I is for infantry but the FK eludes me. Someone suggested it could be an Engineer Outfit - I know the abbreviation for an engineer outfit would be ING. Something that I found doing some more searching led me to "FK" for Flyg Kompaniet (or Army Aviation Company). When it was commissioned in 1916 the Swedish Air Force was an Army Unit until 1926 when it became a separate service, the Air Force. Do any of you have any more information that could point to a definitive meaning of the "FK"?

For your viewing pleasure, here are some photos of it:

Thanks!