British pouch?

[CanadianTravis]

Hello everyone, I need some help identifying a pouch i picked up a few years ago, the only markings i could find on it were the inside of the buttons marked with SHB and a bunch of symbols that resemble the letter P, any help would be greatly appreciated!
Travis

[kradman]

Not British maybe German post war looking at the press stud

[CanadianTravis]

Thanks