Originally Posted by
sovende
How do you know that it was sold in 1987? What is the second character in the date code (the fortnight made)? The catalog references by “raganddbone” does not show a Three Ten in their lineup for 1987 so I’m going to say it’s definitely a 1986 model. I do see that the catalog shows top mount shifters in 1986. No idea why the Australian market would not be equipped with the same 🤔. I can kinda see why one just might need an extra water bottle mount (had to look up “bidon”, not common usage in my circle

). I can imagine long rides in the “outback” might leave a rider a bit parched

. RE: the “no name” aero brake levers, perhaps the former owner swapped out the OEM non-aero 105s? Can you get gum rubber hoods for aero ever sets? IDK?
I’m pretty sure you are going to end up with a fine looking (and performing) bike and as I said before, looking forward to seeing the final product!
Here's a picture of the serial number, probably a late March build. The 1050 groupset was offered for public sale in '87 so maybe a late '86 built bike.
I'm fitting BR-1050 that are non-aero brake levers with gum hoods.