Garry:
These comments are from a late 280SL guy so please confirm for a 230SL:
The color inside the hood usually (always?) matches the exterior and engine bay colour...black may be a re-paint error or maybe the hood is not original to the car...may have an embossed number to verify originality....not super important but a new hood might have been installed because of an accident or rust damage?
The missing Sunvisors may prevent driving the car...in many places this is a safety issue...new pair can run as much as US$1,000.
Have not seen pushpins or rivets on a dash cover before.
The trunk lid may need a bit of positioning as the space between the lid and the body seems a bit wide. The back end of the hood (over the engine compartment) seems bit high...might have to turn down the bumper post for a better position.
Also, your signature says "looking for...any blue" Pagoda. You may not have noticed, but this car is not blue! 0)
It is however very lovely color, perhaps Tunis Beige, one of my favored colors.
Richard M, NYC