I have #1 but mine has a rear flip down Marbles sight which somebody here told me was sometimes on 99s of this era. Doesnt know if that makes it a "different" version to you or not.

"...aspire to live quietly, and to mind your own affairs, and to work with your hands, as we instructed you, so that you may walk properly before outsiders and be dependent on no one." - Paul to the church in Thessalonica.