help with identification

Hi I have been left a watch by my grand father and i cant seem to identify it.It is a vacheron constantin it has reference number is 6768 and serial number 396850.The movement number is 464223 and it also has k453/3B on the movenent.It is 18k gold with 18 jewels.Can someone help me find out if it is authentic  and if it is authentic roughly how much would it be worth.
Thanks Matt
you will need to posts scans, howver since its vintage watch I
01/02/2011 - 10:22
doubt that it is a fake as I have seen very few fake vintage wrist watches. As for valuation you will need to look up the online databased of auction houses such as Christie's, Sotheby's and Antiquorum and check the auction results of watches with your ref number.
Re: you will need to posts scans, howver since its vintage watch I
01/02/2011 - 13:29
Re: Re: you will need to posts scans, howver since its vintage watch I
01/02/2011 - 13:33
looks authentic to me and the movement has the Geneva seal! as
01/02/2011 - 22:22

stated above if you need a quote check the database of an auction house with the reference number of your watch.

Re: looks authentic to me and the movement has the Geneva seal! as
01/03/2011 - 00:43
Hi Thankyou for your help.I still have not been able to find any information on this watch.I am interested to find out what era it is from and just more general info on it.The auction houses did not have any watches with the same reference so I still have no idea about the watch.Any help you could give would be greatly appreciated. Regards Matt
made in the 50s with a majority of yellow gold cases but also
01/03/2011 - 21:56
some in white gold. It uses the caliber 453 in a version which has the Geneva Hallmark.