Don, interesting. Your commission number indicates a very, very early "Federal" Spitfire 1500. Oh, your engine number indicates a later 1296cc "Federal" low-compression engine; there's a very, very slim chance that's original, but it's far more likely your car originally had a low-number "FM" series 1493cc engine.
As for the shifter, not to worry. Odds are that a bushing kit and about 1.5 hrs labor (most in R&R of the interior bits) will fix that. Triumph part number 519770, currently about $38.
Sienna Brown is a nice color when the paint's in good shape, and the combination of that and the New Tan interior is a favorite of mine...although I now see it's no longer Sienna Brown. :blush: