If they were captured / stayed in East Germany, they were most likely used by the germans.
The year is harder, what we need is clear pictures of the front of the gun where the b suffix is (both guns), then clear shots of each side where the acceptance / markings are located. Even then, it will be just in the ballpark, as they made b suffixes in different years.
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Edward Tinker
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Co-Author of Police Lugers - Co-Author of Simson Lugers
Author of Veteran Bring Backs Vol I, Vol II, Vol III and Vol IV
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