I don't have it any more, but I used to have an EF 300mm f/2.8 which dated from November 1987. It looked it too, being "well used". Got the Sigma 120-300 OS now and that does everything it did and more.
Canon 1D, 300D IR, 450D full spectrum, 600D, 5D2, 7D, EF 35/2, 50/1.8, 85/1.8, 135/2+SF, 70-300L, 100-400L
EF-S 15-85, TS-E 24, MP-E 65, Zeiss 50/2 macro, Sigma 150 macro, 120-300/2.8 OS, Samyang 8mm fisheye