This is my first buckle, never really thought about collecting them before but this one was going cheap so i thought why not . I have had a trawl over the internet and found that M4/24 was Friedrich Linden, Lüdenscheid. Around the circular center piece of my buckle it is smooth but all the ones on the net i have seen have "pimples". Also mine has a coat of old black paint (looks original) and what looks to me like dark green paint on the corner.
Can anyone explain why mine is different to the other ones i have seen?