Recently bought a well-used 15-3 (speckled finish, but the cylinder locked up tight and the trigger action smooth) with serial # 8K67xxx (1975?). On the left side of the frame, below the cylinder, it is marked "L.A.S.D. 3037" which may represent some law enforcement agency/inventory number. Is anyone familiar with those initials?

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A well regulated militia, being necessary to the security of a free state, the right of the people to keep and bear arms shall not be infringed.