In the top pic it looks to me like there's the 2 parts of the clamp that fit around the seattube, an L shaped extender attached to the rear of the clamp by 2 screws and then the guard.
In the 2nd image either the L shaped extender is missing and the guard is bolted straight to rear of seat tube clamp (is this possible) or the L shaped piece is fitted standing up rather than laying down as the end of the guard is much higher in the 2nd image than it would be in the 1st.
In the top pic it looks to me like there's the 2 parts of the clamp that fit around the seattube, an L shaped extender attached to the rear of the clamp by 2 screws and then the guard.
In the 2nd image either the L shaped extender is missing and the guard is bolted straight to rear of seat tube clamp (is this possible) or the L shaped piece is fitted standing up rather than laying down as the end of the guard is much higher in the 2nd image than it would be in the 1st.