Wow your 310 is in pristine condition, a lot better than I found mine. It is an Australian spec so slightly different that yours. It has full Shimano 105 1050 with the gear shifters on the side of the downtube rather than the top. Brake levers are not BL-1050 however I have managed to find some with gum hoods to refit during the rebuild. Also have a Rolls San Marco saddle for it and going with Panaracer Pasela tan wall tyres.