I have just bought this Bike and would like help identifying which model please. Serial Number Starts T90**... It has a tapered top tube. Seat tube tapers from both ends to the middle. 1" Steerer.
It doesn't look like a Kona to me. The top tube usually isn't dropped below the seatstays. Early ones had a pipe for the rear brake cable routing, not a canti bridge. Later ones had the infamous dog collar.
My guess is Univega...which will be nice to ride and is desperately un-appreciated as a brand.
To be honest, if that's a Kona I'll eat my hat. I've a 91 Explosif, it looks nothing like that, sorry. To my knowledge, they never had that canti bridge thing going on between the seat stays.....