Interesting mix...

I haven't looked up the serial numbers, but I think you have a pre-1986 with an upgraded freewheel.

The Passage was the #2 touring bike for Schwinn, after the Voyageur, and whem I was researching my 1986, it was the last year the Voyageur came as a 15 speed. And it came with alloy wheels.

From what I recall, the Voyageur and Passage for 1986 and the few years after that, came with the same rims, although other elements changed, like hubs, and other components....

So I think what you have is pre-1986 where someone upgraded the freewheel.

Is the rear shifting indexed? This also came in for the 1987 models, along with the 6 speed freewheel.

Is there a Columbus sticker on it? Or any other sticker proclaiming Chromo tubing? If so, this would make it something worth putting in your sales ad and adding a little to your asking price.

Although I bought my Voyageur to build up instead of a Surly LHT, I don't think it is the trendy thing to do, so it probably would not bring you much money to build it up more than a normal road bike for flipping.

Maybe a mention of "Touring geometry similar to the LHT"...

I think it would be a nice bike for someone into long relaxing rides and not racing...