Hi,
One thing puzzles me, there appears to be a sort of edge along the striped line of the left toggle. I've never observed that before.
I sincerely doubt that the '86' mismatch was a factory problem. The mishap could have happened somewhere during it's service life, or someone just found a replacement part which was 1 number off, as stated earlier.
Never underestimate German quality control, especially that of the Army, which bordered on the lines of insanity.