Originally Posted by
bulgie
This frame has Otsuya lugs, and seatstay tops that are pantographed (later ones that mimic the pantograph look were actually investment-cast with the logo in). Those two things narrow down the date it could have been made, a little, but there's no serial numbers and no records, so you'll never know the date precisely. I'd guess '82 to '85.
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After reading this, I figured I’d see if I could find a receipt for this frame. I did. And it has no date on it. But I have a photo from early 1985 that has this frame hanging on the wall in the place I moved into in late 1984. And I didn’t have the frame when I moved. So I guess its from Dec 1984 to Feb 1985.