Could I get some help on my Eddy Merckx. It is red with the same style lettering as the two posted red ones posted above. The components on it are a mix of Shimano DA, 600, 105, and it is running 7 speed brifters. serial number 7873 with a Z by it (on non-drive side BB shell). On the drive side 4C is stamped as well as the letter A.