We found 70722 price guide item(s) matching your search
There are 70722 lots that match your search criteria. Subscribe now to get instant access to the full price guide service.
Click here to subscribe- List
- Grid
-
70722 item(s)/page
Lot 13
A FINE GEORGE II MAHOGANY CASED CUFF PATTERN MONOCULAR MICROSCOPEJOHN CUFF, LONDON, MID 18th CENTURYThe body tube with stepped moulded shuttered eyepiece over ogee waist and objective tube incorporating marks for six positions on an exponential scale numbered 1 to 6, supported via a tapered collar set in a ring attached to a vertical slide moving against the fixed limb upright marked with six further positions for the respective objectives also numbered 1 to 6, with collar clamp to enable initial positioning and fine screw for focus adjustment, the concave-sided cruciform stage with central aperture fitted with a collar and slider clips to underside and with sockets for the various tools to two of the arms, the centre signed J. Cuff Maker LONDON, the base with socket and scroll-shaped bracket support over a shaped horizontal plate applied with a pivoted concave mirror assembly beneath the stage, the whole mounted on an ebonised cavetto moulded plinth incorporating drawer to front containing three (out of six) objectives numbered 2, 3 and 6, pivoted condenser lens, forceps, slider collar, specimen capsule and seven bone sliders, with original obelisk-shaped case with hinged brass carrying handle to the ogee-turned domed surmount over caddy moulded angles, the front with door opening to reveal internal apron drawer containing additional accessories including a brass frog plate and a bone cylinder containing mica slider inserts.The box 44cm (17.25ins) high with handle down, 21cm (8.25ins) square at the base. John Cuff is recorded in Clifton, Gloria Directory of British Scientific Instrument Makers 1550-1851 as an optician and maker of optical instruments, microscopes, mathematical and philosophical instruments working in London 1731-70. Clifton notes that from 1737 until 1757 he was trading as a maker of 'Reflecting Microscopes and Spectacles against Sergeant's Inn Gate in Fleet Street', then 1757-58 at 'Double Microscope, three Pair of Golden Spectacles & Hadley's Quadrant opposite Salisbury Court in Fleet Street' and finally in 1764 at 'Strand, London'. The design of the present instrument came about through John Cuff's close association with the natural philosopher Henry Baker (1698-1774) whose frustration with the limitations of the Culpeper microscope identified the need for a new and improved instrument. In response to this in 1744 Cuff developed his 'new-constructed Double Microscope' which afforded 'improved accessibility for hand manipulation of the specimen by the microscopist'. Although his design proved very popular John Cuff was unable to make enough money to sustain his business hence he was declared bankrupt in 1750. A major contributing factor to him going out of business was strong competition from the eminent instrument maker, Benjamin Martin, who set-up shop next door to Cuff in Fleet Street. The demand for Cuff's microscope was subsequently mostly satisfied by Peter Dollond, who continued producing instruments to this design well into the second half of the century.
Lot 15
A LARGE VICTORIAN LACQUERED BRASS COMPOUND MINOCULAR POLARISING MICROSCOPEWATSON BROTHERS, LONDON, CIRCA 1885The body tube assembly fitted with a prism/filter slide aperture beneath fine screw focus at the eyepiece end, the junction with the 'Lister' type limb with rack-sliding primary focus adjustment incorporating Vernier distance scale calibrated in inches divided into fiftieths, the circular stage with X and Y diagonal subject positioning, slide clips mounted within dovetail grooves and calibrated in degrees of rotation to outer edge, the subs stage assembly with swing-out condenser lens incorporating a prism set within rotating bezel and the underside with pivoted plano-concave mirror mounted on a double-jointed pivot, the whole raised via pivoted axis support on a complex cast base with twin uprights and integral Y-shaped stand engraved WATSON BRO'S:, 4 Pall Mall, London, 5192 to the rear, in a mahogany box with three body tube filter slides only, (lacking all lenses except the substage condenser).The box 40.5cm (16ins) high, 24cm (9.5ins) wide, 20cm (8ins) deep. According to the Virtual Museum of the History of Minerology the present model of microscope was developed in London in 1879 by Thomas William Watson (son-in-law of William Tranter, gunsmith of Birmingham). The instrument was designed in collaboration with the renowned geologist Frank Rutley and was probably one of the earliest professional quality polarizing instruments made in England. Thomas was joined in business by his brother in around 1885 and the name was changed to Watson Brothers. This example comes from about this time.
Lot 22
AN UNUSUAL FRENCH LACQUERED BRASS THREE-INCH SIX-DRAW PORTABLE ASTRONOMICAL TELESCOPE UNSIGNED, MID 19th CENTURYWith friction fitting brass cover to the 3 inch lens and carrying strap loops to the ray skin covered body tube opposing shuttered eyepiece, 157.5cm (62ins) long extended; 37cm (14.5ins) closed, in original hardwood box with three additional eyepieces.The box 46.5cm (18.25ins) wide, 20cm (8ins) deep, 11.5cm (4.5ins) high. The current lot is unusual in that it appears to have been made for astronomical use with some of the eyepieces filtered most likely to allow solar observations (not recommended). In order to obtain decent focal length whilst remaining portable the instrument incorporates six drawers which allow it to extend to a length of over five feet. In order for this to be achieved without the tube bowing under its own weight requires the instrument to be particularly well made with fine tolerances.
Lot 79
Three vintage cameras. Comprising a Pentax P30, Voigtlander no.A.P.0553/162085 and a Carl Zeiss Jena no.4284975 Condition Report: All camera's are sold as untested. Pentax is well worn, with the lens surround being dented, rusty and discoloured sections of the camera body. Carl Zeiss is in similar condition. Voigtlander has a broken viewfinder, with marks and wear throughout the body.
Lot 430
DOLLOND, LONDON A GOOD EARLY 19TH CENTURY LACQUERED BRASS 3" REFRACTING TELESCOPE IN FITTED MAHOGANY CASE with sighting scope, lens cover, rack and pinion turn table tripod base and rise/fall mechanism; the figured Mahogany case with brass clasps and folding handle, original fitted interior with five further brass lenses.140cm overall closed stand 49cm high - box 115cm long 23cm deep 15cm high
Lot 693
AN EARLY 20TH CENTURY SILVER AND TORTOISESHELL CARRIAGE CLOCK the caddy top case surmounted by a silver hinged handle above a rectangular case with floral silver inlay on tortoiseshell panels within a silver frame on a moulded base raised on bun feet. The 3" enamel dial with Arabic numerals fronting an eight-day spring driven movement with original lever escapement striking the hours/half hours on a gong - hallmark for William Comyns & Sons, London. 191322.5cm high handle upThe inlaid panel to the front has three cracks to the top, one side panel has a crack in the top corner, the other side panel has a small piece missing from the top corner, and the caddy top has a tiny crack in the back bottom corner on the corner edge, the dial has no damage, the glass lens is loose and chipped to the edge, the movement ticks and strikes when wound but is dirty and will need a service.
Lot 395
A BOX OF FILM AND DIGITAL CAMERAS, ETC, including a Minolta Dynax 8000i film camera fitted with a Sigma Zoom-K 1:4-5.6 f=70-210mm lens, a boxed Sony Alpha 300 digital camera fitted with a Sony 0.38m/1.3ft MACRO DT 3.5-5.6/18-70 lens, a Canon PowerShot G3, a Canon Digital IXUS 500, a Sony Cyber-shot 3.3 and a boxed Philips portable CD player, assorted cables, instruction manuals, etc (1 box)
Lot 132
Collection of vintage cameras, including an Agfa with Agfa Colour Optima I8 lens 1:2.8/45, Ilford Sportsman with Vario lens, Yashica TL-Electro with Yashinon-DS 1:1.9 50mm, Franka, Carl Zeiss Jena 1:2.8, Sigma 80-200mm, Canon 50mm, plus Zenith Coated Optics 10x50 field light weight binoculars.
Lot 144
Rare George III brass telescope, Joshua Springer of Bristol, (fl. 1759-1809), the 19-inch x 3-inch main signed 'J. Springer Maker Bristol' to shoulder (lacking lens), on gun-barrel stem and folding tripod support, 58cm long, unboxedGloria Clifton, Directory of Broitish Scientific INstrument Makers 1550-1851, NMM 1996 records Joshua Springer as operating from three addresses in Bristol between 1759 and 1809.
Lot 177
MONT BLANC MEISTERSTÜCK BALLPOINT AND FOUNTAIN PEN SET,both with gilt mounts, the fountain pen with 14k nib and 14cm long, in associated leather pouch, with single Mont Blanc mystery black ballpoint refilBoth lens are subject to light use related wear. The fountain pen could benefit front a light clean, also there is ink residue in refill cartridge. The roller ball may need a new refill as the tip sits out of tip once retracted. Light wear to pouch also. Additional images now available.
Lot 144
A pair of German Third Reich period 7x50 Kreigsmarine binoculars probably by Ernst Leitz, stamped beh and numbered 457862, in case with rubber lens protectors. Together with an interesting hand-written letter negotiating a sale of these binoculars by a former British naval officer to another gentleman, dated 19.9.47.
Loading...-
70722 item(s)/page