Thanks guys,
My data card doesn't indicate tinted windows and my windscreen is clear with a tint at the top.
I think the rhs tinted window is a replacement. The rhs door may have been replaced at some time, the water channels are missing too, see other thread. And I know it had damage rhs front, I can see some repairs on inner front firewall.
Now have to decide what to do.
1. Leave as is
2. Replace one to match the other
3. Tint the lhs one to match the rhs one
A nuts and bolts resto bought as an unfinished (almost not started) project throws up a lot of curve balls but surprisingly mine has gone pretty ok.
Rgds Joe