My late model 71 280 SL was delivered with just 2 keys, also clearly indicated by teh 2 keycodes on the data card. One key opens everything, including the gas cap (which I no longer have). The other key opens the driver door and the ignition only.
There is a little detail about chronological model changes at this web site/page. There is some mention of the combination of keys in August 1969...
http://113.mbz.org/chrono/--
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William Blair Wagner: blairwag@earthlink.net
Education is not always knowing the answer,
...but rather knowing where to look for it!
1971 280SL US Automatic
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