Cathode ray tubes: late pre-war and mostly post-war tubes, 9

This lot has been removed from the website, please contact customer services for more information

Lot 665
Cathode ray tubes:
late pre-war and mostly post-war tubes, 9

Sold for £ 840 (US$ 1,124) inc. premium
Cathode ray tubes:
late pre-war and mostly post-war tubes,
the television CRT's all boxed in original cartons: Ferranti - T9/5 (3 - one of which never opened); Mullard - MW22-17 (1); Ediswan - CRM92A (1); the instrument CRT's: Mullard - MW 6/2 (4) - (9)

Footnotes

  • Cathode ray tubes were difficult to make and could be very dangerous within the finished set because of their high vacuum, sometimes up to four times higher than today's equivalent and with the glass structure not strengthened, serious injuries due to imploding were not uncommon.

    One particular occasion when things went wrong, was in 1939 at Alexandra Palace when Baird had ordered a 24-inch tube to be made by Chance Bros., Birmingham. Taking four glassblowers using very special hycil glass, it was delivered to the north London landmark. The engineers pressure-tested it in the famous rotunda, only for the incorrectly supported CRT to suddenly implode, sending glass, caps and sharp metal some sixty-feet into the air, through the skylight and out onto the terrace. It is not known if any of the engineers were hurt or killed, but Baird decided not to press on with 24-inch tube production until glass technology improved. It did, but only towards the late 1950s after Baird's death.

    This is why all pre-war and most early post-war televisions have safety glass in front of the screens and the bell part of the tube inside is sometimes cloth covered.

    These tubes seem to be either very good little-used examples or ones which were opened, not used and repacked. All tubes are offered untested.

    Serious clients wishing to view this lot in detail may do so in a separate area with safety glasses which will be available.
Auction information

This sale is now finished. If you are interested in consigning in future sales, please contact the specialist department. If you have queries about lots purchased in this sale, please contact customer services.

Buyers' Obligations

ALL BIDDERS MUST AGREE THAT THEY HAVE READ AND UNDERSTOOD BONHAMS' CONDITIONS OF SALE AND AGREE TO BE BOUND BY THEM, AND AGREE TO PAY THE BUYER'S PREMIUM AND ANY OTHER CHARGES MENTIONED IN THE NOTICE TO BIDDERS. THIS AFFECTS THE BIDDERS LEGAL RIGHTS.

If you have any complaints or questions about the Conditions of Sale, please contact your nearest customer services team.

Buyers' Premium and Charges

For all Sales categories, buyer's premium excluding Cars, Motorbikes, Wine, Whisky and Coin & Medal sales, will be as follows:

Buyer's Premium Rates
27.5% on the first £10,000 of the hammer price;
25% of the hammer price of amounts in excess of £10,000 up to and including £450,000;
20% of the hammer price of amounts in excess of £450,000 up to and including £4,500,000;
and 14.5% of the hammer price of any amounts in excess of £4,500,000.

VAT at the current rate of 20% will be added to the Buyer's Premium and charges excluding Artists Resale Right.

Payment Notices

For payment information please refer to the sale catalog.

Shipping Notices

For information and estimates on domestic and international shipping as well as export licenses please contact Bonhams Shipping Department.

App