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1. Altazimuth Theodolite, by Benjamin Cole, London, c. 17502. HP-25 Pocket Electronic Calculator, by Hewlett Packard, Singapore,...3. Telefunken Radio Valve Type LD15 and Carton, by Telefunken,...4. Rotating Multiple Stamp Holder and Stamp, by E.M.R., London,...5. Speedometer and Odometer,with accessories by Elliott Brothers,...6. Marconi Ladies' Silver Pocket Scent Bottle and Stopper, by...7. Graduated Swivelling Coils For Triple Crystal Detector, Early...8. Compound Microscope with Accessories, by James Smith, London,...9. Culpeper Type Compound Microscope in Case10. Compound Microscope and Case11. Home Made Compound Microscope with Accessories12. Drum Microscope with Accessories and Case, English, c. 184013. Simple Microscope, English, c. 183514. Simple Microscope with Case and Accessories, by Charles Chevalier,...15. Compound Microscope with Accessories, by Edwin Quekett, London,...16. 12 Volt Fleming Valve, by Ediswan, London, c. 190517. Marconi Radio Valve Type MT1, by Marconi Company, London, Early...18. Giant Radio Valve, by GEC, English, 1910s19. 4 Volt Fleming Valve, by Royal Ediswan, London, c. 190520. Binocular Compound Microscope with Accessories21. Concave Black Marble Disc, for Lens Polishing?, c. 1700?22. Compound Binocular Microscope in Case with Accessories, by...23. Manually Regulated Arc Light and Case, by Samuel Highley, London,...24. Sector, by W. Backwell, London, c.180025. Winding key