Serial Numbers on the TAG Monacos.
I am looking at a Monaco watch with the TAGHEUER logo with steel band. Movement has the CALIBRE 17 with the proper TAGHEUER writing in gold color. Owner found the number 2894-2, which I think is the movement number not a serial number. The back case is a solid not see through back/cover. Has TAGHEUER logo stamped as well as MONACO above the logo and SWISS MADE SINCE 1860 and at the bottom WATER RERSISTANCE 30M. The outer back plate does not have a model and serial number.
Where else should I look for to see if the watch is authentic? I read the end where the lugs are might be the model and serial number. Is this right and is there another place to check (I have not been able to check the lug area? The owner said that not all models had the serial and model number on the back plate.
Also, on an automatic TAG with stop watch (like the Monaco I am looking at), is it safe to say that the watch is authentic if the stop watch works as a stopwatch and resets? I am thinking that this is one way of telling a replica from an authentic.