Hi Bob,
I was hoping that someone, who didn't see my earlier post, might have the answer. However, the old posts may have had the answer all along. Someone wrote,
"
I just looked at my catalog of Bob Geco, he states
Blue foil loading label with silver type 1'x 6-1/2'' goes in luggage compartmet on lip inside trunk 230 SL to early 250 SL". There was a 230SL for sale recently on one of the auction sites. It had an original blue sticker on the lip to the left of the trunk latch. I've owned many 280SL's and none had that trunk sticker. I believe that this sticker was on some 230SL's and some early 250SL's. Maybe the reason only some had them was because they ran out at times?
Thanks Bob,
John