Hi all. I have an opportunity to buy the Breitling Chronomat below from a buddy. The watch is in original unrestored condition and comes with a highly sought after mesh bracelet. He bought the watch several years ago and was told by the previous owner that it had been serviced, but I dont have documentation. It runs well and everything works as it should. I am trying to get an idea what this watch should be worth and whether it would be a good investment to increase in value over the years. Any insight is greatly appreciated. Thanks.