An important Marconi type 702 mirror-lid television, sold on 26th November 1936 - two owners from new,
Lot 1W
An important Marconi type 702 mirror-lid television, sold on 26th November 1936 - two owners from new,
Sold for £16,800 (US$ 28,237) inc. premium
Lot Details
An important Marconi type 702 mirror-lid television,
sold on 26th November 1936 - two owners from new,
-
Britain's oldest working television set, with 240/405-line switch
-
Ser. No. H-1007,
12-inch screen with black mask, with the original 240/405-line selector switch in-situ within brown bakelite surround with control flap, internal 240-line valve holder not blanked off but valve absent, all original control knobs, in book-matched and part quarter-veneered flame mahogany cabinet with lateral crossbanding decoration, triptych speaker grille mesh to front, the workings with the original CRT, timebase chassis mostly untouched, some components replaced to main tag strips feeding other chassis, EHT transformer recently re-wound.

Accompanied with a full folio of paperwork including:

The original bill of sale to Mr. G. B. Davis of College Road, Dulwich, dated 26th November 1936, stamped and signed 'paid by cheque';
A Marconi 702 instruction manual, in 'foolscap blue' cover;
Photostats of service sheets including circuit diagrams and chassis layouts, general workbench information;
Very interesting original typed sheets from EMI dated 8th May 1946 following this sets' delivery at the Hayes factory for testing, with upgrading suggestions and testing formulas, stamped with the engineer's mark of the world-famous Gerry Wells, with workshop title and Dulwich address;

Operational apparatus including:

A Domino 625/405-line standards convertor;
A Home-made modulator with leads, contained within metal OXO tin chassis;
A modern Freeview set-top box;
And a small quantity of valves and some components, mostly boxed, but limited use for this set.

Footnotes

  • Reference:
    The Michael Bennett-Levy Early Technology Sale, 30 September 2009, Bonhams, London, lot 684 - (for EMI-modified example without 240/405 switch or valve holder intact.)

    This screen would have shown the very first scheduled television programme in the world.
    The CRT picture quality is superb, with the ion-burn limited to very small spot.
    Presented here is the 702 proven to have been sold three weeks after the first transmission date in late 1936 - an extraordinary discovery, complete with all supporting documentation.
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