you should also look at the 1012 and 1013 ref....
full size Oyster Prep. in gold.... the steel version is 1018 .... ( when some people will modify the 8 to look like a 6 and make it a 1016... and put on an explorer dial ... but if you compare as side view with a real 1016 you see the 1016 is a much thicker watch !