Yugo M48 Markings

[cpdpad16]

I'm a newbe that needs some assistance with an M48. Questions I have are:
Does the Letter before the serial number have any significance? One I'm looking at is K58771.
Is it possible to determine DOM by the serial number?
I have seen on previous post pictures "PREDUZECE 44" I am looking at one(see pic) that is stamped in non-english letters. Any extra significance in that?

Thank you for your knowledge and assistance to a rookie.

Pete

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