mrkawasaki":38xwmqms said:
Information gratefully received on this example currently in my LBS - size/year/rarity etc.
Serial T900 00228
I don't see any cause to doubt that it's a 1990 Explosif, and I agree that it does look like a size 19, although it's difficult to tell from an angle (15cm head tube?).
The serial number is a bit odd as you don't usually see zeros in some of those places. I believe the T signifies TBG = Taiwan Bicycle Group, not to be confused with TBG = The Bicycle Group (no relation), the owners of Kona.
You'll see quite a few 1990 Konas that lack the spatter finish. I don't know whether this means that the relationship with Paul Brodie didn't survive the full term, or he decided to change the design or they wanted to save $5/frame, whatever.
It isn't all that rare, nor all that valuable lacking so many bits of its original decals. Nevertheless, a Tange Concept frame is always worth considering (just to confirm that, I assume it has the tapered and ovalised shape to the top and down tubes?)