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Twiss became famous in 1956 when he smashed the air speed record by 300mph in a Fairey Delta 2 jet.

Included are Twiss's leather flying helmet with Perspex visor (shown here), two pairs of leather flying goggles, a leather briefcase and two leather and canvas RAF briefcases, each bearing the Peter Twiss monogram. Estimate: £400-£500.

Contact 01730 233933.