Alvin,
Here are photos of eight (8) "dots" on one of my M1929 Bern Swiss Lugers...
Two (2) dots on the left side of the frame "ear" :
Two (2) dots on the inside surface of the side plate and two (2) dots on the left frame rail...just above the trigger :
One (1) dot on the left side of the front toggle link :
One (1) dot on the right side of the rear toggle link :
