Autocars, a UK based monthly motoring magazine contained a section called "Buying Secondhand".
In Feb 1977 the magazine covered buying a MB 230/250/280 SL.
The previous owner of my car saw (and kept) this article whilst living in the UK and convinced him to buy a 280 which he kept until 2010.
The owner has sent this article to me and I have attached (it's yellowed somewhat) but nonetheless a little time capsule that makes interesting reading.
See the second last paragraph which says......."A couple of years ago an article in "Thoroughbred and Classic Car" drew attention to the potential of the six-cylinder SL as a future classic...." and..."The opportunity to buy one at anything like a bargain price has long past"...
For UK owners, also note the section on spare part prices.
enjoy the read!
cheers