[lydian]

Serial puts it in 1992, plus the over-slung octave key with red logo and black bumper screws means it's probably a T900. That's a near mint specimen you've got there and an excellent horn. If it's anywhere near 2k USD, I would jump on that deal.

I have it's predecessor, the T880, and it rivals my Mark VI in terms of sound and over all quality.

 

[lydian]

How does a T5 from 1966-1975 or a T500 from 1975-1985 end up with a serial number from 1992?

I agree my valuation is on the high side, but the condition is unusually good. A 30 year old horn in this condition is rare. That has to be worth a few hundred bucks.

@Joachim, can your friend nail down the year a little more accurately?