A boxed Charles Perry of London brass Stereomicroscope. Provenance: Entomology Department, natural history Museum, Tring, circa 1920, the Charles Perry no 5 stereomicroscope, in lacquered brass with a heavy steel horseshoe shaped base, cased in a locking mahogany box with key with two eye pieces and two lenses, with signed letter relative to the sale of entomology equipment enclosed, height 28 cm, width 17 cm, depth 17 cm, (case)