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- January 1957 - Sumlock, "Your figurework problems simply solved with Sumlock".
- April 1957 - Sumlock, "Sumlock has all the answers to figurework in your office".
- May 1957 - Sumlock, "Figurework in your Office by Sumlock".
- September 1957 - Sumlock, "Calculating? Adding? Sumlock has the most complete range of machines".
- June 1959 - Sumlock, "Automation comes to Sumlock machines".
- January 1961 - Sumlock Comptometer, "We've put our heads together" - The amalgamation of Sumlock Ltd. and Comptometer Ltd. (Great Britain).
- October 1961 - Anita Mk8, "Visit Stand 108 where you will find something of outstanding interest" - A tantalising invitation to the Business Efficiency Exhibition in London and the launch of the ANITA, the world's first electronic desktop calculator.
- January 1962 - Anita Mk8, "Its A Riot - A New Inspiration To Accounting".
- September 1962 - Anita Mk8, "... Make a beeline to ANITA: World's first and only electronic desk calculator", on stand 103, Business Efficiency Exhibition.
- October 1962 - Anita Mk8, "... with illuminated figures, my dear", ANITA on stand 103, Business Efficiency Exhibition.
- October 1962 - Anita Mk8, "The first electronic Desk Calculator in the world!", ANITA on stand 103, Business Efficiency Exhibition catalogue.
- May 1963 - Anita Mk8 & Comptometer 993s, "The best of both worlds", price of Anita Mk8 £355, Comptometer 993s £265.
- January 1964 - Anita Mk8, "Electronics on Your Desk Mean Anita" (note that it is called a "small computer for desktop use"), price £365.
- February 1964 - Sumlock Comptometer 993 Series "Meet the 993 Family", price range £160 to £330.
- March 1964 - Anita Mk8 & Sumlock Comptometer 993 Series "Electronic or Electric" (note that the Mk8 is "still the only Desk Computer").
- June 1964 - Anita Mk8, "Anita Leads the World".
- January 1965 - Anita Mk8 & Mk9, "Cheers! ... The Toast is Anita", prices: Mk8 £335, Mk9 £425.
- October 1965 - "Anita - The World's First Desk-Top Computer".
- November 1965 - Anita Mk9, "Anita Leads the World", price £425 (note that the Anita was introduced in January 1962 and more than 16,000 are in use throughout the world).
- March 1965 - Anita Mk8 & Mk9, "Elections, Electronics and TV".
- January 1966 - Anita Mk10, "Dual Purpose Sterling and Decimal Desk Calculator".
- July 1966 - Anita Mk10, "Five Years Ahead of its Time", for currency calculations in the British market, then in the old £sd currency and would convert to decimal currency on February 15th 1971. Price £460.
- October 1966 - Anita Mk12, "Now Anita Mk12".
- January 1968 - "Electronic Calculators to Suit Every Need".
- October 1968 - "Decimal Conversion Problems - Not with SC Equipment".
- April 1969 - Anita 1000, "Anita 1000 I.C. Series", price £285.
- May 1969 - Anita 1000, "Anita 1000 I.C. Series", price £285.
- May 1969 - Comptometer 993S, "Won't cost you a fortune - but its worth one".
- July 1969 - Anita 1010, "The follow up to the record breaking Anita 1000", price £320.
- October 1969 - "Solve your decimalisation, metrication and current figure-work problems with Sumlock Comptometer equipment".
- April 1970 - Anita 1020 and 1021, "Square root models".
- January 1971 - Anita 1011P, "Anita goes to print".
- February 1971 - Anita 1000LSI and 1010LSI, "Britain's own new every desk calculator", prices £192 and £250.
- October 1972 - "Service - The invisible key on the world's best desk calculator".
- November 1972 - Sumlock Compucorp 322G, "Anita Business Circle".
- February 1973 - Anita Business Computer and Anita 1233P, "Anita Business Circle".
- April 1973 - Anita 1233P and 1233D, "Anita Business Circle cuts the cost of VAT".
- October 1973 - Anita Business Computer, "We call it a simple billing machine".
The Bell Punch Company & the Development of the Anita Calculator
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Text & photographs copyright © 2002, 2003, 2004 Nigel Tout, except where noted otherwise.