I'm guessing but I would say either a 210 or a 310 and I'm leaning towards a 84 210. It won't be a higher model then a 310. Both the 210 and the 310 use a real thin sized black on the 310 and white on the 210 decal and those didn't last as long as the higher end that used a wider more pronounced gold with black decal. Also the 210 crank looks just like the crank on yours. And the freewheel had the plastic "guard" between first gear and the spokes. So is $75 worth it, it seems high to me, this was a entry level bike back in the day and thus is substantially heavier then their higher end models, the weight for the 210 was around 27 pounds while their Team bikes were around 21 pounds-their lightest and most expensive. Also the bike looks rough, but pics can't show what I need to see so I may not be seeing it correctly, it may look worse! If it is as rough as it looks and probably rougher I would pass.

There are tons of bikes out there that sit in people attics, basements and garage's that got rode for maybe 500 miles then put in storage. Then one day in a fit of cleaning they decide to sell it. I've gotten all my used bikes in almost new condition, one was in new condition, for very low cost and they were all mid to upper mid level bikes. My upper end bikes I purchased new, those high end older bikes are all but impossible to find cheap. Just be patient and wait. Keep checking Craigs list frequently because when a good bike comes up it's usually gone within an hour of posting. Also check garage sales, but there too their the first thing to get bought; and check GoodWill type of stores frequently. There are people that shop the stores, garage sales and Craigslist for the sole purpose of buying a good bike cheap and reselling for a lot more money after cleaning and waxing it on E-bay.