The location of what are technicaly referred to as "Engineering Tags" or "Informational Tags" depends on a couple of things.
Is the car a European specification SL or an American specification. The reason being that begining in 1968, many of the engineering tags that were added to the Pagoda SL were for DOT USA and California cars with smog specification tuning.
I am not sure, however I believe early introduction 230SLs had a very minimun number of informational tags in the engine bay, trunk, and soft top horseshoe boot. Until the later 250SL of 1967 toward the end of production did have valve cover tune up specification tags , radiator high pressure cooling information, oil canister lables. Many other engineering tags were placed on these cars as instructional and warning information for consumers.
I wish I had talent to write a book on this subject. It would be interesting to dissect the lables and the paint inspection markings in the Pagoda production history. It takes more than copying a decal to know were it belongs and if it is correct for the year Pagoda you have.
I was at a well known restorers shop in Escondito California and most of taken 170 photos of collected orginal decals off off cars and some new old stock ones never used. They are always the last and final touch to a well restored automobile or a refreshing of a nice orginal weekend driver.
Bob Geco