Over the years Lawson has produced many great horns, with this Fourier being no exception. Capable of achieving a wide range of tone colors, the horn sounds resonant and warm in all registers. It has a FB210.125 leadpipe and the flare is pattern-annealed to 590 degrees, serial number 921L.
Despite some lacquer ware, the horn has been kept in excellent working condition. The valve compression registers impressively below 0.5 and the valves have great action. Serial number 1134.
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